Can someone please help me with this Question please? 1, Calculate the work done if a 700N Person moves 3m up the stairs?

2, The Person took 10 seconds to go up the stairs, what is the power?

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

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c