Author Question: A 1.8-kg block is projected up a rough 10 inclined plane. As the block slides up the incline, its ... (Read 180 times)

anjilletteb · **on:** Jul 28, 2018

A 1.8-kg block is projected up a rough 10 inclined plane. As the block slides up the incline, its acceleration is 3.8 m/s2 down the incline. What is the magnitude of the force of friction acting on the block?
a. 5.0 N
b. 3.8 N
c. 4.2 N
d. 4.6 N
e. 6.5 N

Question 2

The electric field shown is produced by a single point charge at the center of the picture.

If a new negative point charge is placed at location B directly above the one pictured, the force on it will

a.
be zero.

b.
push it upward.

c.
push it downward.

d.
be in an unknown direction.