a body moves in a circular road of radius 42m and it complete half circle in time 1 minutes find its speed and velocity
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mate actually this question is a tricky one
see
case 1: if the object is moving around the circumference then the speed will be
2πr/time
2×22/7×42/60
44×6/60
then it will be 4.4 ms^2
and velocity will be zero,as displacement will be zero.
case 2:if the object is moving on the radius then the speed will be
42/60
0.7ms^2
and velocity will be zero as displacement will be zero.
Hey mate,i have written both answers please check which one is yours.
hope it helps you.
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