2. Joseph jogs from one end A to the other end B of a strug
300 m road in 2 minutes 30 seconds and then turns aroun
and jogs 100 m back to point in another 1 minute Whatan
Joseph's average speeds and velocities in jogging (a) from A
B and (b) from A to C?
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Answer:
Step-by-step explanation:
Velocity = dispacement / time
Speed = distance / time
a) when he jogs from A to B on a straight road,
displacement = distance = 300m
time = 2 minutes 30 seconds = 150 s
velocity = 300/150 = 2 m/s
speed = 300/150 = 2m/s
b)when he jogs from A to B and turns back to C,
displacement = 300-100 = 200m
distance = 300+100 = 400m
time = 3 minute 30 second = 210 s
velocity = 200/210 = 20/21 m/s
speed = 400/210 = 40/21 m/s
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