PHYSICS 111 FINAL EXAM
QUESTIONS AND ANSWERS 2026
A frog is resting on a sloped tree branch. The frog has the weight of 15 N. What can you
say about the magnitude of the normal force on the frog? - ANSWERSThe normal force
is less than 15 N
A box with a weight of 100 N is at rest. It is then pulled by a 55N force. Will the box
move? - ANSWERSYes
All 3 50 kg blocks are at rest. The tension in rope 2 is: - ANSWERSEqual to the tension
in rope 1
The fan blade is slowing down. What are the sings of w and a? (turning clockwise) -
ANSWERSw is negative and a is positive
A 2kg ball moving east at 3.0 m/s collides and sticks to a 4 kg ball moving north at 2.0
m/s. What is the magnitude of the momentum after the collision? - ANSWERS10 kgm/s
Why are doorknobs placed at the edges of doors rather than in the center? -
ANSWERSto increase the lever arm
What is the frequency of the wave shown in the figure? - ANSWERS0.5 Hz
A 15 kg child is sitting on a teeter totter, 1.5 m away from the pivot point. What is the
minimum distance such that a 220 N force will life the child off of the ground? -
ANSWERS1.0 m
Consider the position versus time graph. Which curve represents constantly
acceleration motion? - ANSWERSC
A stalled car is being pushed up a hill by 3 people, and it is moving at a constant speed.
The net force on the car is: - ANSWERSzero
A rocket explodes into two fragments, one 25 times heavier than the other. The
magnitude of the momentum change of the lighter fragment is: - ANSWERSThe same
as the momentum change of the heavier fragment
An object is moving to the right in a straight line. The net force acting on the object is
also directed to the right, but the magnitude of the force is decreasing. The object will: -
ANSWERSContinue to move to the right, with speed increasing over time
QUESTIONS AND ANSWERS 2026
A frog is resting on a sloped tree branch. The frog has the weight of 15 N. What can you
say about the magnitude of the normal force on the frog? - ANSWERSThe normal force
is less than 15 N
A box with a weight of 100 N is at rest. It is then pulled by a 55N force. Will the box
move? - ANSWERSYes
All 3 50 kg blocks are at rest. The tension in rope 2 is: - ANSWERSEqual to the tension
in rope 1
The fan blade is slowing down. What are the sings of w and a? (turning clockwise) -
ANSWERSw is negative and a is positive
A 2kg ball moving east at 3.0 m/s collides and sticks to a 4 kg ball moving north at 2.0
m/s. What is the magnitude of the momentum after the collision? - ANSWERS10 kgm/s
Why are doorknobs placed at the edges of doors rather than in the center? -
ANSWERSto increase the lever arm
What is the frequency of the wave shown in the figure? - ANSWERS0.5 Hz
A 15 kg child is sitting on a teeter totter, 1.5 m away from the pivot point. What is the
minimum distance such that a 220 N force will life the child off of the ground? -
ANSWERS1.0 m
Consider the position versus time graph. Which curve represents constantly
acceleration motion? - ANSWERSC
A stalled car is being pushed up a hill by 3 people, and it is moving at a constant speed.
The net force on the car is: - ANSWERSzero
A rocket explodes into two fragments, one 25 times heavier than the other. The
magnitude of the momentum change of the lighter fragment is: - ANSWERSThe same
as the momentum change of the heavier fragment
An object is moving to the right in a straight line. The net force acting on the object is
also directed to the right, but the magnitude of the force is decreasing. The object will: -
ANSWERSContinue to move to the right, with speed increasing over time
