Question

question 10 (1 point) what magnitude net force is required to accelerate a 1200 - kg car uniformly from 0 m/s to 27.0 m/s in 10.0 s? a) 1250 n b) 3240 n c) 4360 n d) 1620 n e) 444 n

Explanation:

Step1: Calculate the acceleration

Use the formula $a=\frac{v - u}{t}$, where $v = 27.0\ m/s$, $u = 0\ m/s$, and $t=10.0\ s$. So $a=\frac{27.0 - 0}{10.0}=2.7\ m/s^{2}$.

Step2: Calculate the net - force

Use Newton's second law $F = ma$, where $m = 1200\ kg$ and $a = 2.7\ m/s^{2}$. So $F=1200\times2.7 = 3240\ N$.

Answer:

B. 3240 N