Download App

Force and Laws of Motion — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceForce and Laws of Motion2 Marks
Question
Why are car seat-belts designed to stretch somewhat in a collision?
✓

Answer

Car seat-belts are somewhat stretchable so as to increase the time taken by the passengers to fall forward. Due to this, the rate of change of momentum of passengers is reduced and hence less stopping force acts on them. So the passengers do not get hurt.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 2 Mark )" from Force and Laws of Motion→Force and Laws of Motion — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Give an example of diffusion across plasma membrane.
→
When we open a gas tap for a few seconds, the sound of escaping gas is heard first but the smell of gas comes later. Why?
→
Name two classes of chordates in which clawed digits are present.
→
Give two examples where a body possesses both, kinetic energy as well as potential energy.
→
A wave is moving in air with a velocity of 34m/s. Calculate the wavelength if its frequency is 512 vibrations/sec.
→
What is the need to heat solution?
→
In loading a truck, a man lifts boxes of $100N$ each through a height of $1.5m.$
  1. How much work does he do in lifting one box$?$
  2. How much energy is transferred when one box is lifted?
  3. If the man lifts $4$ boxes per minute, at what is he working$? (g = 10 ms^{-2})$
→
Describe a method to separate a mixture of camphor and sand.
→
Explain why, wooden (or concrete) sleepers are kept below the railway line.
→
What is denitrification?
→