These are the ones I'm questioning...
The speed (v) of a body varies with time (t) as v=at²+bt+c, where a, b and c are positive constants of motion. This relation suggests that the body has:
a. A constant acceleration
b. A constant retardation
c. A variable acceleration
d. A variable retardation
If the kinetic energy of a body is decreased by 36%, the percentage decrease in the linear momentum will be:
Two bodies of masses 1kg and 4kg have equal kinetic energies. The ratio of their linear momenta is:
6. A simple pendulum has frequency of oscillation equal to f. It is therefore taken to a certain height above the ground and then dropped along with its support so that it falls freely under gravity. The frequency of the falling pendulum will:<
Answer by Anonymous at 8:58 PM on Apr. 5, 2010
Answer by AmaliaD at 7:18 PM on Apr. 6, 2010
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