When a baseball player throws a ball straight up, by how much does the velocity of the ball decrease each second

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

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