A person's life was saved in a car accident due to airbags system. During that car accident, airbags expanded in front of head of that person. If that car was not equipped with airbags then movement of head would be stopped by windshield in much faster time. Airbags saved life because it:
Correct answer: C. Causes much smaller force for longer time
- A. Causes much greater force for longer time
- B. Causes much greater force for smaller time
- C. Causes much smaller force for longer time
- D. Causes much smaller force for smaller time
Explanation
Airbags increase the time it takes for the head to stop, reducing the force of impact. Force is inversely proportional to time (F = Δp/Δt).
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Force and Motion questions
A 40kg body starting from rest falls through a vertical distance of 125cm to the ground. The velocity of the body just before it hits the ground is:
A stone is dropped from a cliff. The graph (Position or velocity versus time) which best represents motion when it falls:
A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?
Which of the following statements is absolutely correct: I. Forces can stop or make objects move faster II. Forces can change the direction of movement
Which one of the following is true in the case of inelastic collision?
An aeroplane is flying horizontally with a velocity of 10 m/s and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground at point B. The distance AB is (ignoring air resistance)