Question

Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown in the figure. Calculate the acceleration.

• A. $-10m{s}^{-2}$
• B. $-20m{s}^{-2}$
• C. $-30m{s}^{-2}$
• D. $-40m{s}^{-2}$

Answer 1

The correct option is A $-10m{s}^{-2}$

$a=\frac{dv}{dt}=-\frac{80}{8}m{s}^{-2}=-10m{s}^{-2}$