A ball of mass 0.5kg moving at 10ms\(^{-1}\) collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity.
a
0.2ms\(^{-1}\)
b
0.5ms\(^{-1}\)
c
5.0ms\(^{-1}\)
d
5.5ms\(^{-1}\)
Explanation
Correct Option
cVideo Explanation
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mbatyavyima
4 years ago
Option C is the right answer..
Both the ball and the body have an equal mass of 0.5kg
M1u1-m2v2=(m1+m2)v
Since the two bodies collide, it means they're moving in opposite direction that's why they're subtracting each other
0.5x10-0.5x0=(0.5+0.5)v
U2 is zero since the body is at rest
5=1v... v=5÷1,v=5ms-¹
