Question

a projectile travels 2100 m at a speed of 150 m/s. how long does it take?
14 m/s
315000 s
315000 m/s
14 s

Explanation:

Step1: Recall the speed - time - distance formula

The formula is $v=\frac{d}{t}$, where $v$ is speed, $d$ is distance and $t$ is time. We need to solve for $t$, so $t = \frac{d}{v}$.

Step2: Substitute the given values

Given $d = 2100\ m$ and $v=150\ m/s$. Then $t=\frac{2100}{150}$.

Step3: Calculate the value of $t$

$\frac{2100}{150}=14\ s$.

Answer:

D. 14 s