A circle graph would best help a student communicate a conclusion about an
investigation involving
A. the proportions by mass of three metals in one alloy
B. the amounts of heat released by three chemical reactions
C. the amounts of force required to accelerate three different masses
D. the electrical conductivity of three salt solutions
An athlete sitting in a wheelchair at rest throws a basketball forward.
Since the athlete and the wheelchair have greater mass than the basketball
has, the athlete and the wheelchair will __________.
A. move backward at a lower speed than the basketball moves forward
B. travel the same distance as the basketball but in the opposite
direction
C. move backward at a higher speed than the basketball moves forward
D. have the same forward velocity as the basketball
A group of researchers discovered the fossilized remains of a flying
mammal that appears to have lived 130 million to 165 million years ago.
Since the earliest flying birds are believed to have appeared about 150
million years ago, researchers concluded that birds and mammals began to
fly at about the same time. This conclusion would be most weakened by
evidence of which of the following?
A. A 100-million-year-old fossil of a flying bird
B. A 120-million-year-old fossil of a flying bird
C. A 160-million-year-old fossil of a flying mammal
D. A 200-million-year-old fossil of a flying mammal
A student uses a hot plate, a thermometer, and a stopwatch to investigate
the rate at which a metal object conducts heat. To ensure the most
reliable results, which of the following should the student do?
A. Perform a second investigation using different tools
B. Use several thermometers to measure temperature
C. Develop a hypothesis before starting the investigation
D. Repeat the entire investigation several times
Which of the following information would allow the most direct calculation
of the average speed on the upward flight of a tennis ball thrown straight
up in the air?
A. force and wind speed
B. maximum height and the time it takes the ball to reach that height
C. ball mass and time it takes to reach highest point
D. force and time it takes ball to fall to the ground
A 2.25 kg fish swims in a pond at a constant rate of 56 meters in 96
seconds. What is the fish’s approximate speed?
A. 0.02 m/s
B. 0.40 m/s
C. 0.58 m/s
D. 1.7 m/s
A child jumps on a trampoline, as shown above. Which of the following
causes the child to rise in the air?
A. mass
B. inertia
C. reaction force
D. gravitational force
ANSWER:
When the air is released from a balloon, the air moves in one direction,
and the balloon moves in another direction. Which statement does this
situation best illustrate?
A. What goes up must come down.
B. For every action there is an equal and opposite reaction.
C. The shape and size of an object affect air resistance.
D. The acceleration due to Earth’s gravity is 9.8 m/s 2.
ANSWER:
John has
A. about
B. about
C. about
D. about
ANSWER:
a mass of 90 kg.
900 N
90 N
9 N
9.8 N
Calculate John's weight.
A student investigates the effects of five brands of fertilizer on plant
growth and concludes that Brand X works best. Which of the following would
best communicate this conclusion?
A. A list of the ingredients in each brand of fertilizer used
B. A graph showing the growth rate of plants grown with the different
fertilizers
C. A description of the role of different nutrients in plant growth
D. A diagram showing the conditions in which each plant grew
ANSWER:
What is the net force exerted on a 90.0 kg race-car driver while the race
car is accelerating from 0 to 44.7 m/s in 4.50 s?
A. 9.8 N
B. 20 N
C. 201 N
D. 894 N
ANSWER:
Which of the following free body diagrams represents a car accelerating to
the right?
A. A
B. B
C. C
ANSWER:
Which of the following free body diagrams represents an object in
equilibrium?
A.
B.
C.
ANSWER:
If an object has a net force of zero, it
A. may be at rest or moving at a constant velocity.
B. must be at rest.
C. may be accelerating.
D. must be decelerating.
ANSWER:
Billy hiked 5 km east of his campsite and then 5 km north of his campsite.
What is his displacement?
A. 7.1 km northeast
B. 50.0 km southwest
C. 10 km north
D. 5 km northeast
ANSWER:
Ronnie has a weight of 500 N. Calculate Ronnie's mass.
A. about 30 kg
B. 500 N
C. 500 kg
D. about 50 kg
ANSWER:
A 2-kg bucket hangs from a rope.
A. exactly 9.8 N
B. 9.8 m/s2
C. about 20 N
D. none of the above
ANSWER:
Calculate the tension on the rope.
A bowling ball rolls off of the empire state building. Ignoring air
resistance, the vertical velocity after the ball has been falling for
three seconds is about __________.
A. -98 m/s
B. -30 m/s
C. 9.8 m/s2
D. depends on the mass
ANSWER:
A little boy pulls a wagon with his dog in it. The mass of the dog and
wagon together is 45 kg. The wagon accelerates at 0.85 m/s2. What force is
the boy pulling with?
A. 45 N
B. 85 N
C. 38 N
D. none of the above
ANSWER:
When adding vectors, the length of the vector represents
A. the direction of the vector quantity
B. the magnitude of the vector quantity
C. the magnitude and direction of the vector quantity
ANSWER:
A 68 kg runner exerts a force of 59 N. What is the acceleration of the
runner?
A. 0.87 m/s2
B. 1.2 m/s2
C. 10 m/s2
D. none of the above
ANSWER:
Which of the following diagrams illustrates the horizontal and vertical
velocities of a projectile correctly?
A. A
B. B
C. C
ANSWER: B
Which of the following statements are NOT true about a projectile?
A. A projectile has a vertical acceleration.
B. A projectile acts under the influence of gravity.
C. A projectile must be traveling downward.
D. A projectile's path is called its trajectory.
ANSWER:
Inertia can best be described as _____.
A. the force that keeps moving objects moving and stationary objects at
rest.
B. the willingness of an object to eventually lose its motion
C. the force that causes all objects to stop
D. the tendency of any object to resist change and keep doing whatever
it's doing
ANSWER:
Inertia is dependent on
A. speed
B. acceleration
C. force
D. mass
ANSWER:
Which of the
A. 2-kg ball
B. 4-kg ball
C. 1-kg ball
D. 5-kg ball
ANSWER:
following objects have the greatest inertia?
rolling 3 m/s
rolling 1 m/s
at rest
at rest
Use the following graph, which shows the motion of a car, to answer the
following question: Calculate the average velocity of the car between 0 s
and 10 s.
A. 60 m/s
B. 10 m/s
C. 6 m/s
D. none of the above
ANSWER:
Use the following graph, which shows the motion of a car, to answer the
following question: During which interval does the car come to a stop?
A. at 0 s
B. 10-15 s
C. 30-55 s
D. none of the above
ANSWER:
Use the following graph, which shows the motion of a car, to answer the
following question: During which interval does the car experience largest
velocity?
A. 0-10 s
B. 10-15 s
C. 15-30 s
D. 40-55 s
ANSWER:
Use the following shows the motion of a car, to answer the following
question: Which of the following motion diagrams represents the car in the
first 10 seconds?
A. a
B. b
C. c
D. d
ANSWER:
On a velocity-time graph, a constant velocity is shown by
A. a constant positive slope
B. a constant negative slope
C. a large slope
D. no slope at all
ANSWER:
On a __________ the slope of the line represents the average velocity.
A. position-time graph
B. velocity-time graph
C. acceleration-time graph
D. all of the above
ANSWER:
A cannonball is shot off of a cliff horizontally at 20 m/s and lands at
the base of the cliff 3 seconds later. How far from the base of the cliff
does the cannonball land?
A. 20 m
B. 10 m
C. 60 m
D. 6.3 m
ANSWER:
As Ed sits on a bus that is traveling east 8 m/s, John walks up the aisle
toward the driver at 2 m/s. Sally walks toward the back of the bus at 3
m/s. Andy stands outside on the sidewalk, watching the bus go by. How
fast does Ed perceive John moving?
A. 6 m/s
B. 10 m/s
C. 2 m/s
D. 8 m/s
ANSWER:
As Ed sits on a bus that is traveling east 8 m/s, John walks up the aisle
toward the driver at 2 m/s. Sally walks toward the back of the bus at 3
m/s. Andy stands outside on the sidewalk, watching the bus go by. How
fast does Andy perceive John moving?
A. 10 m/s
B. 6 m/s
C. 2 m/s
D. 3 m/s
ANSWER:
As Ed sits on a bus that is traveling east 8 m/s, John walks up the aisle
toward the driver at 2 m/s. Sally walks toward the back of the bus at 3
m/s. Andy stands outside on the sidewalk, watching the bus go by. How
fast does Ed perceive Sally moving?
A. 11 m/s
B. 5 m/s
C. 3 m/s
D. 8 m/s
ANSWER:
As Ed sits on a bus that is traveling east 8 m/s, John walks up the aisle
toward the driver at 2 m/s. Sally walks toward the back of the bus at 3
m/s. Andy stands outside on the sidewalk, watching the bus go by. How
fast does Andy perceive Ed moving?
A. 8 m/s
B. 0 m/s
C. 2 m/s
D. 3 m/s
ANSWER:
A lizard accelerates from 2 m/s to 10 m/s in 4 seconds.
lizard’s average acceleration?
A. 10 m/s2
B. 8 m/s
C. 4 s
What is the
D. 2 m/s2
ANSWER:
Mary drives 300 miles at an average speed of 65 miles/hour. About how many minutes did it take her to
get to her destination?
A. 4.6 minutes
B. 277 minutes
C. 19,500 minutes
D. none of the above
ANSWER:
If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s/s for 3 seconds, what will its
final velocity be?
A. 160 m/s
B. 150 m/s
C. 60 m/s
D. none of the above
ANSWER:
If Rock A of 1 kg, and Rock B of 2 kg, are both dropped from 20 feet high, which will land first?
A. Rock A
B. Rock B
C. They will land at the same time.
ANSWER:
Garrett runs a distance of 3 miles in 25 minutes. What is his average speed?
A. 8.3 miles/min
B. 75 miles/min
C. 0.12 miles/min
D. 9.8 miles/min
ANSWER:
If a quarter is flicked horizontally off of a desk at the same time another quarter is dropped from the
same height, which quarter will land first?
A. The quarter that is flicked will land first.
B. The quarter that is dropped will land first.
C. Both quarters will land at the same time.
ANSWER:
Mrs. Fanny is trying to push a very heavy basket at Wall-mart. In order to get the most out of the force
she is applying, at which angle should she apply her force?
A. A
B. B
C. C
D. D
ANSWER:
Ignoring air resistance, as a projectile moves along it path, the net horizontal acceleration is
A. zero.
B. equal to the force that launched it.
C. 9.8 N.
D. 9.8 m/s2.
ANSWER:
If you apply a horizontal 40-N force to a 400-kg crate and friction applies a 20-N force against you,
what is the acceleration of the crate?
A. 6.7 m/s2
B. 20 m/s2
C. 60 N
D. 0.05 m/s2
ANSWER:
Ignoring air resistance, as a projectile moves along it path, the net vertical acceleration is
A. zero.
B. equal to the force that launched it.
C. 9.8 N.
D. 9.8 m/s2.
ANSWER:
As Mattie is driving down the highway at a speed of 27 m/s, a car pulls out in front of her. She slams
on her brakes slowing down to 10 m/s in 1.2 seconds. Calculate her acceleration.
A. 14 m/s2
B. -14 m/s2
C. 14 m/s
D. -14 m/s
ANSWER:
According to Newton's second law, a bus is harder to push than a bike because
A. it has more weight.
B. it has more mass.
C. it encounters more friction.
D. it has an equal and opposite reaction to your force.
ANSWER:
If a tennis ball is thrown and caught from the same height with a flight time of 6 seconds, about how
high did it rise?
A. 30 m
B. 45 m
C. 60 m
D. 90 m
ANSWER:
A 0.5-kg ball is tied to a 0.25-m string and swing in a circle. If it takes 0.2 s for the ball to go around
one time, what is the centripetal acceleration?
A. 247 m/s2
B. 49 m/s2
C. 79 m/s2
D. 205 m/s2
ANSWER:
In what direction is the force acting on the cart in the diagram above?
A. toward the center
B. outward
C. toward the right
D. toward the left
ANSWER:
The moon revolves around the earth. What type of force is acting as the
centripetal force that causes the moon to follow its curved path?
A. tension
B. gravitational
C. thrust
D. friction
ANSWER:
In what direction is the acceleration in the diagram above?
A. toward the center
B. outward
C. toward the right
D. toward the left
ANSWER:
A rock is tied to a string and swung in a circle. If the string were to
break, in what direction would the rock fly?
A. toward the center
B. outward
C. it would still continue in the circular path
D. straight line path tangent to the circle
ANSWER:
What happens to the force of attraction between two objects if the
distance between the objects increases?
A. the force increases
B. the force decreases
C. the force stays the same
ANSWER:
Two bowling balls each have a mass of 7.2 kg. They are located next to
each other with their centers 0.4 m apart. What gravitational force do
they exert on each other?
A. 4.1 x 10-5 N
B. 2.2 x 10-8 N
C. 3.4 x 10-2 N
D. 7.1 x 10-12 N
ANSWER:
What happens to the force of attraction between two objects if the mass of
one of the objects decreases?
A. the force increases
B. the force decreases
C. the force stays the same