Author Question: Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down ... (Read 114 times)

mspears3 · **on:** Jul 28, 2018

Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down stream a distance L and back taking a time t2 . If both boats had the same speed relative to the water, which of the following statements is true?
a. t2 > t1
b. t2 < t1
c. t2 = t1
d. t2 = 2t1
e. t2 = 0.5t1

Question 2

A 1 000-kg automobile moving with a speed of 24 m/s collides with a 500-kg car initially at rest. If the two stick together, what is the velocity (in m/s) of the two cars after the collision relative to an automobile moving in the same direction at 15 m/s?
a. 14
b. 16
c. 24
d. 48
e. 1.0