A 1-kg ball is 12 m above the ground, with an initial velocity = 0 m/s. Use the following formulas
[ KE = 1/2 xm x V2]
[P. E = mxgxh] . g =9.8 m/s2
[ Mechanical energy = K. E + P. E]

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p