Kinematics
A car moves at a constant velocity of 20 m/s for 10 seconds. How far does it travel?
200 m
A box of mass 10 kg is pushed with a force of 50 N. What is its acceleration? (Ignore friction)
5 m/s^2
What is the momentum of a 2 kg object moving at 5 m/s?
10 kg⋅m/s
What is the period of a pendulum with a length of 1 m?
2.01 s
A person lifts a 20 kg box to a height of 2 m. How much work is done?
392 J
A ball is dropped from a height of 80 m. How long does it take to reach the ground? (Ignore air resistance)
4.04 s
A person pushes a wall with a force of 100 N, but the wall does not move. What is the reaction force?
-100 N
A 3 kg ball moving at 4 m/s collides with a stationary 2 kg ball. What is the total momentum before the collision?
12 kg⋅m/s
A mass-spring system oscillates with a frequency of 5 Hz. What is its period?
0.2 s
A force of 10 N moves an object 5 m. How much work is done?
50 J
A train accelerates from rest at 2m/s^2 for 5 seconds. What is its final velocity?
10 m/s
A force of 200 N is applied to a 25 kg object initially at rest. What will be its velocity after 4 seconds?
32 m/s
A 5 kg object moving at 10 m/s comes to rest. What is the impulse?
−50 Ns
A mass of 2 kg is attached to a spring with k = 50 N/m. What is the angular frequency?
5 rad/s
A 100 W light bulb runs for 2 hours. How much energy is used?
720000 J
A car moving at 30 m/s comes to a stop in 5 seconds. What is its acceleration?
−6 m/s^2
A person with a mass of 70 kg experiences a force due to gravity. What is their weight?
686 N
Two objects stick together after a collision. What type of collision is this?
It is a perfectly inelastic collision.
At what position in simple harmonic motion is kinetic energy maximum?
At the equilibrium position.
A car of mass 1000 kg moves at 20 m/s. What is its kinetic energy?
200000 J
A cyclist accelerates from 5 m/s to 15 m/s in 4 seconds. What is the acceleration?
2.5 m/s^2
If a 5 kg object is moving at a constant velocity, what is the net force acting on it?
0 N
A 1 kg object moving at 8 m/s collides elastically with a 2 kg object at rest. What is conserved?
Both momentum and kinetic energy are conserved.
What is the restoring force in a spring system?
F = −kx
A machine does 600 J of work in 3 seconds. What is its power output?
200 W