Question

A body is moving in a circular path of radius 7m and completes one round of it in 40s.Displacement

at the end of 2min 20sec is__
(a) 14m (b) 154m (c) 7m (d) Zero

Answer 1

Answer:

Speed=

time

distance travelled

=

time

half of the circumference

=

2

2

1

×2×π×r

=

2

2

1

×2×

7

22

×7

=11ms

1

Speed and velocity can be equal for uniform motion along a straight line.