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Can someone PLEASE help me with a few physics questions???

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:
a. 12%
b. 20%
c. 28%
d. 36%



Two bodies of masses 1kg and 4kg have equal kinetic energies. The ratio of their linear momenta is:
a. 1/2
b. 1/4
c. 1/8
d. 1/16





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:<

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Anonymous

Asked by Anonymous at 8:41 PM on Apr. 5, 2010 in

Answers (2)
  • google it
    Anonymous

    Answer by Anonymous at 8:58 PM on Apr. 5, 2010

  • i passed physics in high school but i have no idea!! googling the questions would be a good start. best of luck to you -- is that high school lever or college level work ?
    AmaliaD

    Answer by AmaliaD at 7:18 PM on Apr. 6, 2010

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