A rope is towing a 100-kg rock, from rest, with a force that varies with time, as shown in Figure 6-4.
Figure 6-4

At the end of 8.0 s, the velocity of the rock is
A) -20 m/s.
B) +80 m/s.
C) +40 m/s.
D) +20 m/s.
E) zero.

Question

A rope is towing a 100-kg rock, from rest, with a force that varies with time, as shown in Figure 6-4.
Figure 6-4

At the end of 8.0 s, the velocity of the rock is
A) -20 m/s. 
B) +80 m/s. 
C) +40 m/s. 
D) +20 m/s. 
E) zero.

Quizplus · Accepted Answer

The Answer of A rope is towing a 100-kg rock, from rest, with a force that varies with time, as shown in Figure 6-4.
Figure 6-4

At the end of 8.0 s, the velocity of the rock is
A) -20 m/s. 
B) +80 m/s. 
C) +40 m/s. 
D) +20 m/s. 
E) zero.

A Rope Is Towing a 100-Kg Rock, from Rest, with a Force