An object is moving at constant speed on a horizontal surface. What is the net work done on it?

What does impulse equal?

According to the law of conservation of momentum, which of these is true during a collision (if no external forces act)?

What is the mechanical energy of a system if potential energy = 30 J and kinetic energy = 70 J?

A 2 kg object swings in a vertical circle of radius 1.5 m. At the lowest point, speed is 8 m/s.What is the tension in the string at the lowest point?

 If the net work done on an object is positive, what happens to its kinetic energy?

Which of the following increases the torque produced by a force?

A 5 kg box is pushed 6 m across a rough floor by a 30 N force applied at a 30° angle above horizontal. The coefficient of kinetic friction between the box and floor is 0.2.How much net work is done on the box?

A force of 20 N acts at an angle of 60° to the direction of displacement. If the object is displaced 3 m, what is the work done by the force?

A disk has a moment of inertia of 2 kg·m² and is spinning at 5 rad/s. What is its angular momentum?