JAMB Physics 2019 Objective — Question 16

Question 16 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2019 Objective paper, with the correct answer and a full explanation.

Two cars of equal mass moving with a velocity of 50m/s collide head-on. Calculate the velocity of each after the collision if they stick together

A. 50m/s
B. 30m/s
C. 10m/s
D. 0m/sCorrect

Explanation

For a head-on collision, the cars travel in opposite directions. With equal mass x: (x×50)−(x×50)=(2x)V ⇒ 0=(2x)V ⇒ V=0.

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