Question

find the force applied to 2kg object to get it moving at 5m/s in 1second? 5n 10n 1n 20n

Explanation:

Step1: Calculate acceleration

Use the formula $a=\frac{v - u}{t}$, where $u = 0m/s$ (starts from rest), $v=5m/s$, $t = 1s$. So $a=\frac{5 - 0}{1}=5m/s^{2}$.

Step2: Calculate force

Use Newton's second - law $F=ma$, with $m = 2kg$ and $a = 5m/s^{2}$. Then $F=2\times5 = 10N$.

Answer:

10N