a 1500 kg pick-up truck is acted upon by an external force which reduces its velocity from 8.6 m/s to 4.3 m/s in 6.7 s. what is the value of the returning force?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?