Question

A body is moving with a velocity of 10m/s. If the body is in uniform motion, what will be the velocity after 10s?. A body is moving in a circle of diameter 21 m. What is the distance and displacement when no of rounds is (a) 1.5 (b) 3
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Answer 1

Answer:

velocity will be 10m/s

answer a) distance=99m and displacement = 21m

answer b) distance =198m and displacement= 0m

Explanation:

what will be the velocity after 10s

the velocity will be the same because body is moving in a uniform motion. It means velocity = 10m/s

answer no. a) diameter of circle = 21 m

circumference of circle= 2πr= 22/7×21m= 66m

1.5 round

distance =1.5 × 66m = 99mand displacement = diameter of circle = 21m

answer no.b) distance=3× 66m= 198m and displacement is 0m because his final position and initial potion is after 3 round and the shortest distance between initial and final position is 0m