Question

A child on a spinning ride at a playground has a centripetal acceleration of 0.80 m/s2. The child completes a full circle every 4.2 s.

How far from the center of the ride is the child?

0.068 m
0.085 m
0.27 m
0.36 m

Answer 1

The formula for centripetal acceleration is:
a = (4π²R)/T²
R = (aT²)/4π²
R = (0.8 x 4.2²) / 4π²
R = 0.36 m

The child is 0.36 meters away from the center.

Answer 2

Answer:

The answer is D

Explanation: