List of top Physics Questions on Newton’s Second Law Of Motion asked in CBSE Class XI

Two billiard balls each of mass 0.05 \(\text {kg}\) moving in opposite directions with speed 6 \(\text m \,\text s^{-1}\)collide and rebound with the same speed. What is the impulse imparted to each ball due to the other ?

A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

A batsman deflects a ball by an angle of 45° without changing its initial speed which is equal to 54 km/h. What is the impulse imparted to the ball ? (Mass of the ball is 0.15 kg.)

A constant force acting on a body of mass 3.0 \(\text {kg}\) changes its speed from 2.0 \(\text m \, \text s^{-1}\) to 3.5 \(\text m \, \text s^{-1}\) in 25 \(\text s\). The direction of the motion of the body remains unchanged. What is the magnitude and direction of the force ?

A constant retarding force of 50 \(\text N\) is applied to a body of mass 20 \(\text {kg}\) moving initially with a speed of 15 \(\text m \,\text s^{-1}\). How long does the body take to stop ?