Q26 of 35 Page 143

A man falling from a height receives more injury when he falls on the cemented floor rather than when he falls on a heap of sand. Why?

When a person hits on cemented floor he is brought to rest in a very short time as a result of which a greater force comes into action in a very small time whereas in case of sand if a person falls he takes an interval to come to rest and hence, less force comes into action.

In a nutshell, remember; Force ∝


More from this chapter

All 35 →
24

The average force necessary to stop a hammer with momentum p Ns in 0.5s is?

 25

Out of the four physical quantities associated with the motion of an object viz. force, velocity, acceleration and momentum, which one remains constant for all bodies large or small undergoing free fall?

 27

Objects change their state of motion due to the net force acting on them. Do you agree with this statement? Discuss with examples.

 28

In the oil tankers some space is left at while filling them. Why?