A car travels in a straight line covering a total distance of 90.0 miles in 60.0 minutes. Which one of the following statements concerning this situation is necessarily true?
A)The velocity of the car is constant.
B)The acceleration of the car must be non-zero.
C)The first 45 miles must have been covered in 30.0 minutes.
D)The speed of the car must be 90.0 miles per hour throughout the entire trip.
E)The average velocity of the car is 90.0 miles per hour in the direction of motion.

Question

Quizplus · Accepted Answer

The average velocity for the entire trip can be found by dividing the total distance traveled by the time taken to cover that distance.

Average Velocity = Total Distance / Time Taken

= 90.0 miles / 60.0 minutes

= 1.5 miles per minute

To convert this to miles per hour, we can multiply by 60.

Average Velocity = 1.5 miles/min * 60 min/hr

= 90.0 miles per hour

Therefore, the statement that is necessarily true is that the average velocity of the car is 90.0 miles per hour in the direction of motion.

A Car Travels in a Straight Line Covering a Total