Calculate the force of Earth's gravity on a spacecraft 1.6 * 10^7 m above the surface of the Earth if the spacecraft has a mass of 2000 kg.

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

What kind of simple machine is a catapult?