Newton’s Laws Practice MC ?’s period 4
10 Physics Questions
1.
A Newton is a unit of force
A. true
B.false
2.A student has a mass of 79 kg. What is the students weight?
A. 790 N
B. 100 N
C. 7900 N
3. A 75 kg person traveling at a constant velocity on ice skates experiences a force
of 40N. What is the persons acceleration?
A. .53 M/s^2
B. 53m/s
C. 44m/s2
4.
Which has more mass, a kilogram of feathers or a kilogram of iron?
a.
feathers
b.
iron
c.
neither- both are the same
5.
How much force is needed to accelerate a 2kg llama to an acceleration of 6m/s2?
a.12N
b..33N
c. 36N
6.
A bug flies and hits a semi truck. Compared to the force of the bug on the truck,
the force of the truck on the bug is….
A. greater
B. same
C. smaller
7.
You pull horizontally on a 50kg crate with a force of 500N and the friction force
on the crate is 250N. the acceleration of the crate is
A. zero
B. 2m/s2
C. 4m/s2
D. 5m/s2
8.
As mass increases so does weight?
A.true
B. false
9.weight is not a measure of gravitational force
A false
B.true
10. a net force will always cause a change in motion
A. sure
B.not happenin
1. A 100kg book and 10kg shoe are dropped in a vacuum. The force of gravity on the
100kg book is…
a. Zero
b. the same force as the 10kg shoe
c. 10 times much force than the shoe
2. How much force is need to accelerate a 150 kg brick to an acceleration of 10m/s/s?
a. 1500N
b. 800N
c. 160N
3. What is the action-reaction pair when you punch the wall?
a. the fist hits the wall
b. the wall hits fist
c. both of them are collect
4. You pull horizontally on a 50kg brick with a force of 500N, and the friction force on
the brick is 250N. The acceleration of the brick is..
a. zero
b. 2 m/s/s
c. 5 m/s/s
5. A truck and a bee traveling at the same speed have a head-on collision. The vehicle to
undergo the greater change in velocity will be the…
a. a bee
b. a truck
c. same
6. If your pushing the car with force of 200N and the car dose not move, what is the
weight of the car?
a. 100N
b. 150NN
c. more then 200N
7. An astronaut in outer space away from gravitational or frictional forces throws a rock.
The rock will…
a. gradually slow to stop
b. continue moving forward in a straight line at constant velocity
c. continue moving forward in a straight line accelerating
8. Which object have greater inertia?
a. object with 50kg
b. object with 100kg
c. object with 15kg
9. If the brick’s weight is 500N, what is brick’s normal force?
a. 250N
b. 400N
c. 500N
10. What is the normal force of a guy who weights 113kg?
a. 11.3N
b. 11300N
c. 1130N
10 Multiple Choice Questions
1. Which FBD is the right one for a block falling with some air resistance?
A.
B.
C.
D.
2. A 20N force and a 40N force act right on an object. What is the net force on the
object?
A. 20N
B. 40N
C. 60N
D. None of the above
3. You drop a 1kg feather and a 10kg baseball bat in a vacuum. The weight on the
10 kg baseball bat will be. . .
A. Zero
B. 10Kg
C. Ten times as much as the force on the 1 kg feather
4. Newton’s third law states action-reaction pair, if you are driving a van and a
butterfly smack into the windshield then the force of the van on the butterfly is
A. Smaller
B. Greater
C. Same
D. Not enough information
5.
A.
B.
C.
Benji weighs 10N, convert the mass of Benji into Kg
1kg
5kg
10kg
6. A car is going 30m/s on Schaumbug road, it starts to accelerate to 60m/s/s, what
caused the acceleration to take place?
A. Velocity
B. Acceleration
C. Force
D. Inertia
7.
A.
B.
C.
D.
What is another name for the force of gravity that is acting on an object
Friction
Inertia
Acceleration
Weight
8.
A.
B.
C.
What is another name for kinetic friction?
Static Friction
Sliding Friction
Kinetic Friction
9. Which graph is representing what is occurring when there is a constant force
being applied to some object without a friction surface
A.
B.
C.
D.
10. What is the net force of an object, when it’s acceleration is 0.2m/s/s, and mass is
20kg
A. 2N
B. 10N
C. 5N
D. 4N
Newton's Laws Test
1. A cat that is 30kg, grips his claws in the carpet with a coefficient of .35. what is the frictional
force?
a) 96N
b) 105N
c) 155N
d) 300N
2.What is the coefficient between the wheels and the road of a car with a mass of 480kg and the
friction is 2150N?
a) .30
b) .12
c) .6
d) .48
3. A dog (65kg) runs up an incline. The angle at which the dog runs is 35 degrees. What is the
weight perpendicular?
a) 532N
b) 373N
c) 433N
d) 288N
4. What is the weight parallel?
a) 373N
b) 288N
c) 532N
d) 433N
5. What is the normal force of the dog?
a) 433N
b) 373N
c) 532N
d) 288N
6. What is the Fnet of the dog if the dog ran 3 m/s^2 up the incline?
a) 195N
b) 130N
c) 125N
d) 208N
7. If the coefficient is .63, then what is the friction force?
a) 233N
b) 335N
c) 333N
d) 195N
8. What is the mass of a kangaroo hopping with a Fnet of 875N with an acceleration of 15 m/s^2?
a) 65kg
b) 73kg
c) 29kg
d) 58kg
9. What is the normal force of the kangaroo?
a) 604N
b) 487N
c) 458N
d) 580N
10. What is the friction force of between the kangaroo and ground if the coefficient is .3?
a) 188N
b) 229N
c) 134N
d) 174N
Answers:
1:b
2:d
3:a
4:a
5:c
6:a
7:b
8:d
9:d
10:d
1. What does mass multiplied by acceleration equal?
A. net force
B. velocity
C. inertia
D. weight
2. How do you get weight?
A. a·m/s2
B. m/s·kg
C. ab/cd
D. m·g
3. What is the acceleration when F=10N and m=5kg?
A. 1m/s2
B. 10m/s2
C. 2m/s2
D. 20m/s2
4. Whats the force when the a=10m/s2 and m=6kg?
A. 60N
B. 120N
C. 16N
D. 8N
5. What is the weight of Joe if his mass is 70kg?
A. 7000N
B. 7N
C. 700N
D. 891N
6. What is Newton’s 3rd law?
A. A2+B2=C2
B. You can’t touch something without it touching you back.
C. SinA/a=SinB/b=SinC/c
D. a=b2+c2-2cb·cosA
7. If the force is 49N, how much mass does the object have?
A. 4.9 kg
B. 490 kg
C. 22.1 kg
D. 2 kg
8. You weigh 1000N, what is your mass?
A. 20 kg
B. 100 kg
C. 10,000 kg
D. 10 kg
9. The mass is 2kg and the force is 20N, what is a?
A. 5 m/s2
B. 10 m/s2
C. 15 m/s2
D. 20m/s2
10. You are 950N, what is your mass?
A. 95 kg
B. 49 kg
C. 100 kg
D. 20 kg
1. What does mass multiplied by acceleration equal?
A. net force
B. velocity
C. inertia
D. weight
2. How do you get weight?
A. a·m/s2
B. m/s·kg
C. ab/cd
D. m·g
3. What is the acceleration when F=10N and m=5kg?
A. 1m/s2
B. 10m/s2
C. 2m/s2
D. 20m/s2
4. Whats the force when the a=10m/s2 and m=6kg?
A. 60N
B. 120N
C. 16N
D. 8N
5. What is the weight of Joe if his mass is 70kg?
A. 7000N
B. 7N
C. 700N
D. 891N
6. What is Newton’s 3rd law?
A. A2+B2=C2
B. You can’t touch something without it touching you back.
C. SinA/a=SinB/b=SinC/c
D. a=b2+c2-2cb·cosA
7. If the force is 49N, how much mass does the object have?
A. 4.9 kg
B. 490 kg
C. 22.1 kg
D. 2 kg
8. You weigh 1000N, what is your mass?
A. 20 kg
B. 100 kg
C. 10,000 kg
D. 10 kg
9. The mass is 2kg and the force is 20N, what is a?
A. 5 m/s2
B. 10 m/s2
C. 15 m/s2
D. 20m/s2
10. You are 950N, what is your mass?
A. 95 kg
B. 49 kg
C. 100 kg
D. 20 kg
1.What Acceleration will result when a 12-N net force is applied toa 3-kg object?
A. 3m/s2
C. 4m/s2
B. 4m/s
D. 6m/s
2. If an astronaut throws a rock in outer space with no gravitational and frictional forces.
The rock will...
A. Gradually Slow to a stop C. Speed up
B. Keep going on forever
D. None of the choices
3. Head bumps ball and..?
A. Ball Goes Far
C. Ball doesn't go anywhere
B. Head gets hurt
D. Balls hits head
4. Greater inertia means____ mass?
A. Smaller
C. Greater
B. no relationship
D. none of the above
5. How much does a 56 kg person weigh?
A. 560N
C. 5600N
B. 56N
D. 560lbs
6. What is the mass of an object that has a net force of 45N and an acceleration of 9
m/s2?
A. 9kg
C. 45kg
B. 5kg
D. None of the above
7. When there is a net force to the right the forces are?
A. Balanced L=R
C. Unbalanced L<R
B. Unbalanced L>R
D. NONE
8. If someone is jumping off the sears tower, what is it called when the man is at constant
velocity?
A. Equal Velocity C. Terminal Velocity
B. Highest Speed D. Hitting the ground....
9. What is the mass of an object that weights 120 lbs?
A. 1200 N
C. 120 kg
B. 54.54 kg
D. 70 kg
10. Because of this, objects do not fall indefinitely with constant acceleration
A. velocity
C. inertia
B. air resistance D.both b and c
10 Physics Questions
1.
A Newton is a unit of force
A. true
B.false
2.A student has a mass of 79 kg. What is the students weight?
A. 790 N
B. 100 N
C. 7900 N
3. A 75 kg person traveling at a constant velocity on ice skates experiences a force
of 40N. What is the persons acceleration?
A. .53 M/s^2
B. 53m/s
C. 44m/s2
4.
Which has more mass, a kilogram of feathers or a kilogram of iron?
a.
feathers
b.
iron
c.
neither- both are the same
5.
How much force is needed to accelerate a 2kg llama to an acceleration of 6m/s2?
a.12N
b..33N
c. 36N
6.
A bug flies and hits a semi truck. Compared to the force of the bug on the truck,
the force of the truck on the bug is….
A. greater
B. same
C. smaller
7.
You pull horizontally on a 50kg crate with a force of 500N and the friction force
on the crate is 250N. the acceleration of the crate is
A.
B.
C.
D.
8.
zero
2m/s2
4m/s2
5m/s2
As mass increases so does weight?
A.true
B. false
9.weight is not a measure of gravitational force
A false
B.true
10. a net force will always cause a change in motion
A. sure
B.not happenin
1) Greater mass means ______ inertia
a) Smaller c) Greater
b) mass and inertia are not related d) none of the above
2) If the birthday boy hits the pinata with a bat, the reaction is that
a) the pinata will hit the bat c) the pinata will break
b) there is no reaction d) the bat will hit the pinata
3) How much force is needed to accelerate a 5kg object to an acceleration of 25 m/s/s?
a) 5 N c) 125 N
b) 30 N d) 1250 N
4) What is the weight of an object that has a mass of 16kg?
a) 1600 N c) 1.6 N
b) 160 N d) 16 N
5) What is the mass of an object that has a Fnet of 28 N and its acceleration is 2 m/s/s?
a) 56kg c) 30kg
b) 5.6kg d) 14kg
6) Because of this, objects do not fall indefinitely with constant acceleration
a) velocity c) inertia
b) air resistance d) both b and c
7) What is the magnitude of an object that is accelerating eastward at a rate of 4 m/s/s and
has a mass of 80kg and friction force acting on it is 50N.
a) 270 N c) 370 N
b) 470 N d) 850 N
8) A 5kg object is not moving because the weight force
a) equals to the normal force c) equals to the eastward force
b) does not equal to the normal force d) not enought info given
9) A snowflake falling at constant velocity means that the
a) acceleration is zero c) Fnet is zero
b) inertia is zero d) both a and c
10) When there are two ______ forces, a net force will not occur
a) unbalanced c) uneven
b) balanced d) both a and b
Answer Key
1. C.
2. A.
3. C.
4. B.
5. D.
6. B
7. D.
8. A.
9. D
10. B.
Best Physics Test – Phil M, Steve C., Scott W., Francis G.
When going to Mars, an object with a mass of 87 kg will have a mass of...
A. Same Mass
B. 87/6
C. 0
D. None of the Above
Niko comes to school wearing a Speedo. How do you find acceleration if you have mass and
weight of a moving table?
A. Weight - Mass = Acceleration
B. A = v/t
C. true
D. Acceleration equals weight divded by mass
If Niko in a speedo was sitting on a chair. The action is Niko pushing on the chair, so the
reaction is?
A. Chair pushing on Niko
B. Chair pushing on Speedo
C. Earth pushing on speedo
D. Earth pushing on Niko
If a golfer hits a ball with a club what is the reaction?
a.Ball hits goose
b. Ball goes far
c. Club hits ball
d. Ball hits club
If there is no net force then there is no…
a. Niko in a speedo
b. Inertia
c. acceleration
d. right answer
a falling object reaches its lowest velocity, it is said to be.....
a) going very fast
b) at terminal velocity
c) to fast to see
d) on the ground
The same house (77777 kg) that was chasing the mailbox fell into a giant vacuume, made in
Spain, what is the mass now?
A. None of the Below
B. 777777 kg
C. 0kg
D. 777777 N
The engine of a 1000 N car is exerting 500N. What is the cats acceleration?
A. 600 m/s2
B. .5 m/s2
C. 5 m/s2
D. 10 m/s2
All of the following are true for any object at rest except
A. net force=0
B. a=0
C. coefficient of kinetic friction = .13
D. W=Normal
A rock is falling at constant velocity. What is the rocks acceleration?
A. 10 m/s2
B. 10 f/s2
C. 0 m/s2
D. none of the above
Answer Key:
a
d
a
c
c
a
c
c
c
1.
Which has more mass, a ton of rocks or a ton of pencils?
a. Rocks
b. Pencils
c. neither- weigh the same
2.
What is the net force of on object if it has a 10.987N force and a 13.876N force
going in the same direction?
a. 24.836N
b. 24.876N c. 34.987N
d.65376748N
3.
How much force is needed to accelerate a 185 kg man to an acceleration of
180m/s/s?
a. 12674N
b. 22230N
c.78423N
d.33300N
4.
Find the weight of a 15 kg block hanging by a string? (Use -9.8 m/s/s as gravity)
a. 150N
b. 147N
c. 1N
d. 153N
5.
What is the acceleration of an object if its mass is 23 kg and has a net force of
138N?
a. 3N
b. 6N
c. -3N
d. -6N
Josh runs at a constant velocity with a net force 1000000 N, how much air
resistance acts on Josh?
a. 100000N
b. 7000000N
c. 2000000N
d. 1000000N
6.
7.
A 15 kg candy bar and a 1 kg peanut are dropped in a vacuum. The force of
gravity on the 15 kg candy bar is
a. the same as the force of the peanut
b. zero
c. 15 times as much as the force on the 1 kg peanut
8.
Spandy punched Moses in the face. Compared to the force of Spandy’s fist on
Moses’ face, the force of Moses’ face on Spandy’s fist is
a. smaller
b. the same
c. greater
d. 7
9.
What is the mass of a box with the net force of 100N and the acceleration of .4
m/s/s?
a. 250 kg
b. 150 kg
c. 350 kg
d. 50 kg
What’s the acceleration of an object with the net force of 120N and mass of 4 kg?
a. 40 m/s/s
b. 30 m/s/s
c. 20 m/s/s
d. 10 m/s/s
10.