Questions
A steel ball falls from a height h on a floor for which the coefficient of restitution is e. The height attained by the ball after two rebounds is
detailed solution
Correct option is D
The velocity attained after a fall through a height h is given byv2=2ghThus h∝v2. The velocity after first rebound is ev. Therefore, the height attained after first rebound =e2h. Velocity after second rebound is e2v. Hence the height attained after rebound is second e4h. Thus the correct choice is (4).Talk to our academic expert!
Similar Questions
A particle falls from a height h on a fixed horizontal plate and rebounds. If e is the coefficient of restitution, the total distance travelled by the particle before it stops rebounding is
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