In collision of elastic bodies, the coefficient of restitution is the ratio of t

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Question
In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.
Options
A. True
B. False

Correct Answer

True

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3. Non-coplaner non-concurrent forces are those forces which
Options
A. meet at one point, but their lines of action do not lie on the same plane
B. do not meet at one point and their lines of action do not lie on the same plane
C. do not meet at one point but their lines of action lie on the same plane
D. none of the above

4. The wheels of a moving car possess
Options
A. potential energy only
B. kinetic energy of translation only
C. kinetic energy of rotation only
D. kinetic energy of translation and rotation both

5. The efficiency of a lifting machine is the ratio of
Options
A. output to the input
B. work done by the machine to the work done on the machine
C. mechanical advantage to the velocity ratio
D. all of the above

7. The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as
Options
A. coplaner concurrent forces
B. coplaner non-concurrent forces
C. like parallel forces
D. unlike parallel forces

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