Question

motion is a change in position over time. there are 3 ways to measure motion: speed, velocity, and acceleration. speed is how fast an object is moving. we calculate speed using the formula: speed = distance/time. velocity is speed in a given direction. acceleration can occur when an object speeds up, slows down or a has a change in direction. choose the correct answer. what is an example of acceleration? a car slowing down for a yellow light a car at a red light a car at a stop sign

Explanation:

Step1: Recall acceleration definition

Acceleration is change in speed, direction or both.

Step2: Analyze each option

A car at red - light or stop - sign is stationary. A car slowing down for yellow light changes speed, so it's acceleration.

Answer:

A. A car slowing down for a yellow light