Newtons Law
A 4 kg object is pushed with a force of 20 N.
What is its acceleration?
5 m/s^2
A 5 kg box experiences a friction force of 10 N.
What is the friction coefficient if the normal force is 50 N?
μ = 0.2
A 2 kg book sits on a shelf 3 meters high.
What is its gravitational potential energy?
A 12 N force acts on a 3 kg block.
How much force is needed to make it accelerate at double that rate?
8 m/s² → F = 24 N
A 20 kg crate rests on a horizontal surface.
The coefficient of friction is 0.3.
What is the friction force?
A soccer ball (mass 0.5 kg) accelerates at 18 m/s² when kicked.
How much force did the player apply?
A 10 kg sled is pulled with a force of 40 N and accelerates at 2 m/s².
What is the friction force opposing the motion?
A person pushes a box with a force of 30 N for a distance of 4 m.
How much work is done on the box?
A 40 kg cart accelerates at 1.2 m/s². Friction pushes back with 8 N. How much total applied force must the person exert to achieve this acceleration?
A 50 kg student pushes a box across the floor with a horizontal force of 150 N.
The box moves at constant speed.
What is the friction force?
An object has 200 J of potential energy.
Its mass is 5 kg.
How high is it above the ground?