Which of the following are examples of centripetal acceleration? check all that apply. a. a car moving down a straight road b. a ball dropped from a second-floor window c. a girl running around a track d. a tetherball swinging around its pole can be more than one answer (best answer get brainleist)

The correct option is D.

Step-by-step explanation:

Given the options we have to select the option which is the example of centripetal acceleration.

Centripetal acceleration is rate of change of tangential velocity. The direction of centripetal acceleration is always inwards along radius vector of the circular motion.

First option: A car moving down a straight road.

Here, there is no circular motion.

Hence, not the example of centripetal acceleration.

Second option: A ball dropped from a second-floor window.

Here, there is no circular motion.

∴ not the example of centripetal acceleration.

Third option: A girl running around a track

Here motion is circular but the radius vector is not constant

Hence, not the example of centripetal acceleration.

Fourth option: A tetherball swinging around its pole

Here, a ball is joined to a pole as shown here the radius vector is constant and the ball swinging around the pole.

Hence, it is a example of centripetal acceleration.

i think it is 18

step-by-step explanation:

step-by-step explanation:

a and d