A person standing on a scaffold lowers an object of weight 250 N by means of a rope, at constant speed. If the weight of the rope is negligible, the force that the person exerts is …

A 1 kg block begins sliding up a 30° inclined plane with an initial velocity of 4.0 m/s. How far will the block go up the plane if the surface is rough and the coefficient of kinetic friction between the block and the plane is 0.20.   

A car slows with an acceleration of 2.0 m/s2 over a period of 6.0 s. If its initial speed was 12 m/s how far will it travel before it stops?  

A 60 kg student runs up a flight of stairs that rise vertically 4.0 m. If the student takes 4.2 s to climb the stairs, then find the power supplied by his muscles to complete this task.

Determine the magnitude of the minimum perpendicular force that must be applied to a 3.0 kg book to keep it from sliding down a vertical wall.   

A train moving east applies its breaks as it pulls into the station. The direction of the train’s acceleration is:

A motorcycle starts from rest and achieves a speed of 60 m/s in 4 seconds. Find its average acceleration. 

The Recovery Perspective holds that

An individual who believes that others can cause him or her to feel or behave in certain ways, against his or her own will, is experiencing

The Nexus Requirement means that for someone to be civilly committed in California, they must