Jogging Jake runs at 4 m/s along a train flatcar that moves at 10 m/s in the opposite direction. Jake's speed relative to the ground is
A)6 m/s.
B)10 m/s.
C)14 m/s.
D)none of the above

Question

Quizplus · Accepted Answer

To find Jake's speed relative to the ground we need to add his velocity to the velocity of the train flatcar. Since the train and Jake are moving in opposite directions, we subtract the velocity of the train from Jake's velocity. This gives us:

Jake's velocity relative to the ground = Jake's velocity – train's velocity
= 4 m/s - (-10 m/s)
= 4 m/s + 10 m/s
= 14 m/s

Therefore, the answer is (A) 6 m/s.

Jogging Jake Runs at 4 M/s Along a Train Flatcar