Physics WAEC

An object of mass 2kg moving with a velocity 3ms‾¹ collides head-on with another object of mass 1kg moving in the opposite direction with a velocity of 4ms‾¹. If the objects stick together after collision, calculate their common speed.

A. 0.60ms‾¹
B. 0.67ms‾¹
C. 2.00ms‾¹
D. 3.33ms‾¹

Correct Answer: Option B

B. 0.67ms‾¹

Explanation

M1V1−(M2V2)=V(M1+M2)

2 x 3 – 1 x 4 = V(2 + 1)

V = 2/3

= 0.67ms‾¹

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6 years ago

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