Forces and LAWS OF MOTION

1. Match Newton's Laws with the description. Newton's First Law of Motion An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force. Newton's Second Law of Motion Acceleration is produced when a force acts on a mass. Newton's Third Law of Motion For every action, there is an equal and opposite reaction. 2. Do you know the differences in Newton's Laws? Sort the descriptions for each of Newton's Laws Newton's 1st Law Law of Inertia unbalanced forces friction sliding fluid Newton's 2nd Law force acceleration F = m x a change of momentum Newton's 3rd Law action-reaction force pairs rebound 3. The mass of an object is 5 kg and acceleration produced is 3 m first second to sixth second. The change in momentum is: 100 kg m 75 kg m 50 kg m 25 kg m 4. A train of mass 3 x 107kg initially at rest is pulled by a force of 5 x 104 N through a distance of 3 m. Assume air resistance to be negligible, the speed of the train is: 120.4 km 100.1 km 210.2 km 112.6 km 5. A ball is released from the top of a building and it reaches the ground in 5 seconds. What is the height of the building and the velocity with which the ball will strike the ground? ( Take g= 10m 125m, 25 m 125m, 50 m 150m, 25 m 150 m, 50 m