Question

speed, velocity & acceleration
abdulqebbar gungormus
motion tutorial: speed velocity & acceleration
emily is about to gain
2 m/s of speed every
second as she heads
downhill
multiple - choice question
is this an example of speed, velocity, or acceleration?
acceleration
speed
velocity
rewatch

Explanation:

Step1: Define speed

Speed is the rate of change of distance.

Step2: Define velocity

Velocity is the rate of change of displacement (has direction).

Step3: Define acceleration

Acceleration is the rate of change of velocity. Here, Emily gains \(2m/s\) of speed every second. Since speed is changing over time, it is related to acceleration (as acceleration is about change in velocity - and speed is magnitude of velocity. A change in speed implies a non - zero acceleration).

Answer:

acceleration