Name ________________________________________________
Physics CP
Date _______
Period ____________
Newton’s Second Law Practice Worksheet for F = ma
F
m
a
Part A:
1. What are the units for mass? ___________________
2. What are the units for acceleration?________________________
3. What are the units for Force? ______________________
4. What does a force cause an object to do?_________________________
5.
Billy pushes a cart with a mass of 10 kg along the ground. Billy applies a force of 40 N
to the cart which causes the cart to accelerate at 4 m/s2.
a. What will happen to the acceleration of the cart if the mass stays the same and
the force is doubled?
b. What will happen to the acceleration of the cart if the mass stays the same and
the force is cut in half?
c.
What will happen to the acceleration of the cart if the force stays the same but
the mass is doubled?
d. What will happen to the acceleration of the cart if the force stays the same but
the mass is cut in half?
Part B: Using Newton’s second law. Force = mass x acceleration, calculate the FORCE in
each of the following problems. SHOW ALL WORK to receive full credit.
1. An orange with a mass of 0.4 kg falls from a tree with an acceleration of 10 m/s 2.
Information (what do you
Set-up : (equation and filled – Solution (include units!)
know)
in equation:
2. A baseball has a mass of 0.3 kg. A pitcher with a really great arm can give the baseball
an acceleration of 300 m/s2
Information (what do you
Set-up :
Solution (include units!)
know)
3. A tennis racket accelerates a tennis ball at 700 m/s2. The ball has a mass of 0.02 kg.
Information (what do you
Set-up :
Solution (include units!)
know)
4. The flipper on a pinball machine accelerates the pinball at 0.5 m/s 2. The pinball’s mass
is 0.01 kg.
Information (what do you
Set-up :
Solution (include units!)
know)
Part C: Using Newton’s second law, calculate the ACCELERATION . SHOW YOUR WORK.
1. A 0.10 kg bullet is fired from a gun with an average force of 600 N. What is the bullet’s
acceleration?
Information (what do you
Set-up :
Solution (include units!)
know)
2. A cat with a mass of 4 kg and a weight of 40 N drops to the ground
Information (what do you
Set-up :
Solution (include units!)
know)
3. A cyclist and his bike have a mass of 200 kg. What acceleration is produced by a 1200 N
force?
Information (what do you
Set-up :
Solution (include units!)
know)
Part D. Calculate the Mass in each of these situations using Newton’s second Law
1. What is the mass of a person and his skateboard if an 1800 N force produces an acceleration
of 12 m/s2?
Information (what do you
Set-up :
Solution (include units!)
know)
2. What mass will be accelerated at 5.0 m/s2 by a force of 1750 N?
Information (what do you know)
Set-up :
Solution (include units!)