Explain why, it is easier to stop a tennis ball than a cricket ball moving with the same speed.
As we know that the mass of the cricket ball is higher than that of a tennis ball, so it is easier to stop a tennis ball than a cricket ball moving at the same speed as a cricket ball has a higher momentum than that of the tennis ball.
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Explain why it is easier to stop a truck on the road than to stop a ship in the water.
A cricket ball of mass $70\ g$ moving with a velocity of $0.5\ m/s$ is stopped by a player in $0.5\ s$. What is the force applied by the player to stop the ball?
Why do a cricket ball float in water even though it is a heavy object?
A batsman hits a cricket ball which then rolls on level ground.After covering a short distance, the ball comes to rest. The ball slows to a stop because$(a)$. the batsman did not hit the ball hard enough.$(b)$. velocity is proportional to the force exerted on the ball.$(c)$. there is a force on the ball opposing the motion.$(d)$. there is no unbalanced force on the ball, so the ball would want to come to rest.
When a cricket ball is thrown vertically upwards, it reaches a maximum height of 5 metres.(a) What was the initial speed of the ball?(b) How much time is taken by the ball to reach the highest point? $(g=10\ ms^{-2})$
Suppose a ball of mass m is thrown vertically upward with an initial speed u, its speed decreases continuously till it becomes zero. Thereafter, the ball begins to fall downward and attains the speed u again before striking the ground. It implies that the magnitude of initial and final momentums of the ball are same. Yet, it is not an example of conservation of momentum. Explain why?
When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.
(a) Explain why a cricket player moves his hands backward while catching a fast cricket ball.(b) A 150 g ball, traveling at 30 m/s, strikes the palm of a player’s hand and is stopped in 0.05 seconds. Find the force exerted by the ball on the hand.
On what factor does the inertia of a body depend ? Which has more inertia, a cricket ball or a rubber ball of the same size ?
A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?
It is much easier to burst an inflated balloon with a needle than by a finger. Explain.
In a cricket match, why does a player lower his hands slightly while catching the ball?
If two balls of same masses are dropped on sand, the depths of penetration is same if: I. Heavier ball is dropped faster than lighter ball II. Lighter ball is dropped faster than heavier ball III. The product ‘mv’ is same for both bodies IV. None of these
A ball moving on a surface stops after travelling some distance. Does it violate the first law of motion? Explain.
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