Astone is tied to a 0.85-meter cord. it is swung in a circle at a constant rate of 6.0 m/s. what is the centripetal acceleration of the stone? 42 m/s2 7.1 m/s2 0.14 m/s2 5.1 m/s2

42 m/s²

Explanation:

When a body moves in a circle, centripetal force acts radially inwards.

The relationship between centripetal acceleration and tangential velocity is given by:

a = v²/r

where r is the radius of the circle in which the stone moves.

Here, r = 0.85 m

v = 6.0 m/s

Therefore,

a = (6.0 m/s)² / 0.85 m = 42 m/s²