Question

Speed and velocity differ from each other as follows:
1. The distance travelled by a moving The distance travelled by a moving
body per unit time is called its speed. body in a particular direction per unit
Speed
Velocity
time is called its velocity
Velocity is a vector quantity.
2. Speed is a scalar quantity.
EXAMPLE 3.8. Joseph jogs from one end to the other of a straight 300 m road
say from point A to B in 2.50 minutes and then turns around and jogs 100 m
back towards the starting point C in another 1.00 minute. What are the Joseph's
average speeds and velocities in jogging (a) from A to B, and (b) from A to C?
Solution:
(a) For AB section
Total distance travelled = 300 m
Total time taken = 2.5 min
300 m
120 m
Average speed for A to B =
120 m min-1
= 2 ms-
2.5 min
60 s
Average velocity for A to B = Average speed for A to B
120 m min-1 = 2 m si​

Answer 1

Answer:

Speed is the distance travelled by a moving body per unit time

Explanation:

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