A car travels along a straight line at a constant speed of

60.0 mi/h for a distance d and then another distance d in

the same direction at another constant speed. The average

velocity for the entire trip is 30.0 mi/h. (a) What is the constant

speed with which the car moved during the second

distance d? (b) What If? Suppose the second distance d

were traveled in the opposite direction; you forgot something

and had to return home at the same constant speed

as found in part (a). What is the average velocity for this

trip? (c) What is the average speed for this new trip

60.0 mi/h for a distance d and then another distance d in

the same direction at another constant speed. The average

velocity for the entire trip is 30.0 mi/h. (a) What is the constant

speed with which the car moved during the second

distance d? (b) What If? Suppose the second distance d

were traveled in the opposite direction; you forgot something

and had to return home at the same constant speed

as found in part (a). What is the average velocity for this

trip? (c) What is the average speed for this new trip

## This question was asked on Jan 28, 2013.

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