Question

a net external force of 100.0 N acts on an object of mass 20.0 kg whose initial speed is 10.0 m/s. The force acts in the opposite direction from the objects motion, and it acts for 1.00 s. what is the objects final speed in m/s

Answer 1

Explanation:

We know that :

$F = m\frac{(v - u)}{t}$

$100 = 20 \frac{(v - 10)}{1}$

$v(final \: velocity) = 15 \: m \: sec^{ - 1}$