Chhattisgarh Board Solutions for Chapter: Force and Laws of Motion, Exercise 2: Discuss

Why does a cricketer pull his hands backwards while catching a ball coming at a high speed?

When we jump from a height on a cemented floor we get hurt more as compared to when we jump from the same height on a bundle of hay. Explain the reason.

A body moving at a constant speed is made to stop in $0.25 \mathrm{s}$ by applying a force of $200 \mathrm{N}$. Calculate the initial momentum of the body.

A force of $5 \mathrm{N}$ leads to an acceleration of $8 \mathrm{m} {\mathrm{s}}^{-2}$ on a body of mass $m_1$. Same force causes an acceleration of $24 \mathrm{m} {\mathrm{s}}^{-2}$ on another body of mass $m_2$. If both the bodies are tied together, how much acceleration will be produced by the same force?

If the net unbalanced force becomes zero, will the momentum also become zero? Explain.

If the action and reaction are always equal then explain how a bull is able to pull a cart forward?

The motion of a rocket is based on which concept?

A fire extinguisher is hurt by a rubber pipe that throws water at a very high speed. Explain this.