Question

Which scenario involves acceleration? a motorcycle at constant speed on a highway a recreational vehicle parked in a campground a car decreasing its speed due to a red light a teenager talking to friends at an intersection

Answer 1

Answer:

its c

Explanation:

Answer 2

Answer:

a car decreasing its speed due to a red light

Explanation:

Acceleration of an object is defined as the rate of change in velocity of the object:

$a=\frac{\Delta v}{\Delta t}$

where

$\Delta v$ is the change in velocity

$\Delta t$ is the time elapsed

Therefore, we have a non-zero acceleration every time there is a change in velocity.

Among the examples given, we notice that only the following one:

"a car decreasing its speed due to a red light"

involves a change in velocity (because the car is decreasing its speed), therefore this scenario involves a non-zero acceleration.