Question

a car is moving along a straight line it moves from A to B in 18 seconds and return from P to Q in 6 seconds find its average velocity and average speed in going from Oto P and Oto P and back to you Q

Answer 1

average velocity=displacement/time
average speed=total distance travelled/total time taken

Answer 2

Answer:

Step-by-step explanation:

(a) from O to P

average velocity = displacement/time interval

V = 360m/18s = 20ms-1

average speed = path length / time interval

360/18 = 20ms-1

Thus, in this case the average speed is equal to the magnitude of the average velocity.

(b) From O to P and back to Q

In this case ,

average velocity = displacement/time interval

V = 248m/18+6s = 10ms-1

average speed = path length / time interval

360+120/24 = 20ms-1

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