Question

Two identical cars collide head on. Each car is traveling at 100 km/h. The impact force on each car is the same as hitting a solid wall at:

(a) 100 km/h

(b) 200 km/h

(c) 150 km/h

(d) 50 km/h
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Answer 1

Answer:

Since the collision is head on and each car is identical and traveling at the same speed, the force of impact experienced by each car is equal and opposite. This means that the impact is the same as hitting a solid wall at 100 km/h.

Answer: 100 km/h.

Answer 2

Answer:

(a) 100 km/hr

Explanation:

Given that two identical cars travelling at 100 km/hr collide.

The total momentum before and after the collision is zero since their individual momentum are equal and opposite. Thus, Newton's second law (force equals the rate of change of momentum), it is clear that the impact force is the same.

Therefore, the impact is the same = 100 km/hr.

Hope it helps!