Question

what is speed, velocity & acceleration? | physics
while driving, the moved left and sped back up from 15mph
to 25mph
acceleration
speed
rewatch

Explanation:

Step1: Define Acceleration

Acceleration is the rate of change of velocity.

Step2: Analyze the Scenario

The speed changes from 15 mph to 25 mph. There is a change in speed (a component of velocity).

Step3: Contrast with Speed

Speed is just a scalar quantity representing how fast an object is moving. But here, since there is a change in the magnitude of the quantity related to motion (speed which is part of velocity), and acceleration is about change in velocity (which can be due to change in speed, direction or both).

Answer:

Acceleration