1. An object moves along a square boundary such that it completes one complete round in 1 minute. If one side of square is 10 m, find distance, displacement, speed & velocity after two rounds.
2. In q no 1 above, what will be distance, displacement, speed & velocity after half round?
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1.
length of one side = 10m
distance covered
in Ist round = 10 × 4
= 40 m
total distance in 2 round = 40 × 2
= 80 m
time = 2 minute
= 120 s
Speed = distance / time
= 80 / 120
= 2/3 m/s
Since starting point and ending point are same ,
Displacement = 0
since displacement is 0
velocity = 0
2.
During half round ,
distance travelled = 20 m
time taken = 30 s
speed = 20 / 30
= 2/3 m/s
displacement = diagonal
= 10 × √2
= 14.1 m
velocity = 14.1 / 30
= 0.47 m/s
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