Newtons laws of motion questions | form two Physics

“Action and reaction are equal in magnitude but opposite in direction.” This statement refers to

1. the law of inertia
2. Newton's second law of motion
3. the principle of moments
4. Newton's third law of motion.

Define the following terms

(i) Inertia 
(ii) mpulse

Give two practical examples where impulse and momentum play an important role.

A tennis ball of mass 120 g moving at a speed of 10 m/s was brought to rest by one player in 0.02 seconds. Calculate the average force applied by the player.

State the 2^nd  and 3^rd  Newton’s laws of motion

A passenger on a seat of a motorcycle which is in motion when immediately stops, tends to be thrown forward because one is obeying:
A. Newton’s first law of motion
B. Newton’s second law of motion
C. Newton’s third law of motion
D. The principle of motion.

1. State Newton’s second law of motion
2. Two balls X and Y of masses 20 g and 15 g moving with velocity of 5 m/s and 3 m/s respectively in the same direction collide and couple together. With what velocity will they move after collision?

The action of the gun and the bullet fired supports:
A. Law of conservation of momentum
B. Newton’s first law of motion
C. Newton’s second law of motion
D. Newton’s third law of motion

a) A car accelerates uniformly from rest to a speed of 15 km/hr in 10 seconds. Find:
(i) The acceleration in m/s².
(ii) The distance covered during this period in metres.
b) The maximum retardation with which the breaks of a locomotive can reduce its speed is 1.8m/s². Calculate the time in which the locomotive can be brought to rest.

A stone is thrown vertically from the ground with a velocity of 20 m/s. Calculate the maximum height reached.