A 20-kg projectile leaves a 1000-kg launcher with a speed of 200 m/s. What is the recoil speed of the launcher?

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?

A"car"initially"at"rest"experiences"a" constant"acceleration"along"a"horizontal" road."the"position"of"the"car"at"several" successive"equal"time"intervals"is" illustrated"here. between"which"adjacent"positions"is"the" change"in"kinetic"energy"of"the"car"the" greatest