# Question #91442

Jul 31, 2016

I found: $25 \sec$
The initial velocity will be zero. Acceleration is $2 \frac{\frac{k m}{\min}}{\sec}$ wfhile the final velocity will be $50 \frac{k m}{\min}$;
${v}_{f} = {v}_{i} + a t$
$50 = 0 + 2 t$
$t = \frac{50}{2} = 25 \sec$