List of practice Questions

Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

A stone of 1 kg is thrown with a velocity of 20 m s^–1 across the frozen surface of a lake and comes to rest after traveling a distance of 50 m. What is the force of friction between the stone and the ice?

An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s^–2?

How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 m s^–2.