1. What is the effect on the speed of the ball? 2. What is the effect on the speed of the cart?

Question

Roll a ball on the floor, Apply a little force on the ball with your hand in the direction of its motion.

In fig. a person is pulling a cart and another person is pushing it from back.  What is the effect on the speed of the cart?

It is clear from the above examples that on applying force in the direction of their motion, the seed of the ball and cart increases. So we can say that-

1. What is the effect on the speed of the ball?

2. What is the effect on the speed of the cart?

Answer 1

1. The speed of the ball increases. Observe figure shown below. Conclusion : In figure man is pulling the cart and another person is pushing it from back

2. The speed of the cart increases.

Conclusion : On applying the force in the direction of motion of moving object, its speed increases.