Author Question: An 8.0-kg block is released from rest, with v1 = 0.00 m/s, on a rough incline, as shown in the ... (Read 300 times)

bclement10 · **on:** Jul 29, 2018

An 8.0-kg block is released from rest, with v1 = 0.00 m/s, on a rough incline, as shown in the figure.

The block moves a distance of 1.6-m down the incline, in a time interval of 0.80 s, and acquires a velocity of v2 = 4.0 m/s. How much work does gravity do on the block during this process?

A) +81 J
B) +100 J
C) +120 J
D) -81 J
E) -100 J

Question 2

The plot in the figure shows the potential energy of a particle, due to the force exerted on it by another particle, as a function of distance. At which of the three points labeled in the figure is the magnitude of the force on the particle greatest?

A) point X
B) point Y
C) point Z