Newton’s Third law Worksheet
1. A man is attempting to push a chair across the floor with constant
speed by exerting a force of 50 N. When will the chair exert a force
of 50 N on the man?
a) only if the man and the chair are at rest
b) only if the man and the chair are accelerating
c) only if the man and the chair are moving with constant
velocity
d) in all of the above cases
2. A man standing on a chair weighs 800 N. In order for the chair to
support the man, the chair must exert an upward force of
a) less than 800 N.
b) 800 N.
c) more than 800 N.
1. Two men are having a shoving contest, each man pushes the other
at the exact same time. Ross pushes Jake with 90.4N of force and
Jake pushes Ross with 110.2N of force. How much force is exerted
on Jake?
a) 110.2 N
b) 19.8 N
c) 200.6 N
d) 90.8 N
2. Calculate the tension the string given below and justify your answer:
1. A man is attempting to push a chair across the floor with constant
speed by exerting a force of 50 N. When will the chair exert a force
of 50 N on the man?
a) only if the man and the chair are at rest
b) only if the man and the chair are accelerating
c) only if the man and the chair are moving with constant
velocity
d) in all of the above cases
2. A man standing on a chair weighs 800 N. In order for the chair to
support the man, the chair must exert an upward force of
a) less than 800 N.
b) 800 N.
c) more than 800 N.
1. Two men are having a shoving contest, each man pushes the other
at the exact same time. Ross pushes Jake with 90.4N of force and
Jake pushes Ross with 110.2N of force. How much force is exerted
on Jake?
a) 110.2 N
b) 19.8 N
c) 200.6 N
d) 90.8 N
2. Calculate the tension the string given below and justify your answer:
