A force of 100 dyn acts on a mass of 25g for 5 s. Find the velocity attained.

Explanation

Given, `mu` = 0, F = 100 dyn, t = 5 s and m = 25 g.
Now we know, F = ma.
`therefore" " 100 = 25 xx a` or, a = 4 cm`cdot s^(-2)`
Therefore, v = u + at = 0 + 4 `xx` 5 = 20 cm`cdot s^(-1)`