Which of the following is an example of simple harmonic motion?

a. a ball bouncing on a sidewalk
b. calculating the angle of elevation for a building
c. a police car shining a spotlight into buildings as it drives by
d. the height of the water in monterey bay

A. A ball bouncing on a sidewalk

Explanation:

S H M or Simple Harmonic motion can be described as the type of motion that repeats it self after a fixed interval of time and a restoring force acts in the direction opposite to the direction of the displacement of the object.

From the given options, option A where in a ball bounces on a sidewalk is a repeated motion in a fixed interval of time. A force always acts on the ball in the direction opposite to the displacement of the ball. Thus, it is a correct example of simple harmonic motion.

50 inches should be the resultant vector

radiation warms things up temp rises convection currents air circ windy weather