The work done by a string of simple pendulum during one complete oscillation is equal to:
(a) Kinetic energy of pendulum (b) Potential energy of pendulum
(c) Zero
(d) None of these​

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

What was the first instrument to ever record an earthquake?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .