What is an action excerted on a body in order to change the body's state of rest or motion?​

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.