Author Question: A block of mass M slides down a frictionless plane inclined at an angle with the horizontal. The ... (Read 172 times)

sc00by25 · **on:** Jul 27, 2018

A block of mass M slides down a frictionless plane inclined at an angle with the horizontal. The normal reaction force exerted by the plane on the block is

A) Mg sin .
B) zero, since the plane is frictionless.
C) Mg cos .
D) Mg.
E) Mg tan .

Question 2

A 35 N-force toward the west is applied to an object. The object moves 20 m east during the time the force is applied. What is the change in kinetic energy of the object?

A) 0.0 J
B) 0.57 J
C) 1.0 J
D) -700 J
E) 350 J