A 8000 kg engine pulls a train of 5 wagons each of 2000 kg along a horizontal track. If the engine exerts a force of 40000 N and the track after a friction force of 5000 N then calculate:(a) the net accelerating force.(b) the acceleration of the train, and(c) the force of wagon 1 on wagon 2

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

A truck starts from rest and rolls down a hill with a constant acceleration. It travells a distance of 400 m in 20s. Find it's acceleration. Find the force acting on it if it's mass is 7 tonnes (Hint) tonne = 1000 kg)

A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows a stop because: (a)The batsman did not hit the ball hard enough.(b)Velocity is proportional to the force exerted on the ball.(c)These is a force on the ball opposing the motion.(d) These is no unbalanced force on the ball, so the ball would want to come to rest.

Why is it advised to tie any luggage kept on the roof of a bus with a rope?

When a carpet is beaten with a stick dust comes out of it. Explain.