# Question #a7773

Mar 5, 2017

$a = 4 m {s}^{-} 2$

$F = 40 N$

#### Explanation:

Assuming that the object started from rest, the acceleration is

$\frac{\Delta v}{\Delta t} = \frac{20}{5} = 4 m {s}^{-} 2$

Force is the product of mass and acceleration, so

$F = m a = 10 \times 4 = 40 N$