Question

Which of the following describes acceleration?

A. Acceleration cannot be described with a negative number.
B. Acceleration is a vector quantity.
C. Acceleration describes how displacement changes with time.
D. The SI units for acceleration are m/s.

Answer 1

Deceleration is then acceletion
Aceelration is a vector quatity i.e for r.g :5 m/s square means shows the magnitude and the direiction
Acceleration is described as the change in displacment per unit time
And lastly, acceleration SI unit is m/s^2 ... M/s is the SI unit of velocity
Hope this lil info helps (y)

Answer 2

Deceleration is negative acceleration ***** or u can say the retardation