the force exerted by a driving boat is conservative, provide the internal function is negligible. Assume friction is negligible. Describe the changes in the potential energy of driving boat as a swimmer dives from it, starting just before the swimmer steps on the boat until just after his feet leave it.

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Asystematic approach to problem solving is called a (an)