Acceleration close accelerationThe rate of change in speed (or velocity) is measured in metres per second squared. Acceleration = change of velocity ÷ time taken. is the rate of change of velocity. It ...

constant m is called the inertial mass of the body. We will choose to call Δ v /Δ t acceleration and give it the letter a. On the graph of velocity vs. time, Δ v /Δ t is the slope of the curve. If the ...

A horizontal line means the object is moving at a constant speed. The gradient of the line = the rate of change of speed. The steeper the line, the greater the increase in speed. The area under the ...

Another basic question people have been asking: why do we feel acceleration, but not velocity? One person recently effectively asked this in the "Physics Is Fun" Facebook group.