Question

a freely falling object starts from rest. after falling for 6 seconds, it will have a speed of about: 36m/s 12m/s 60m/s 6m/s

Explanation:

Step1: Identify the formula

Use the formula $v = v_0+gt$, where $v$ is final - velocity, $v_0$ is initial - velocity, $g$ is acceleration due to gravity ($g\approx10m/s^{2}$), and $t$ is time.

Step2: Determine the initial - velocity

The object starts from rest, so $v_0 = 0m/s$.

Step3: Substitute the values

Substitute $v_0 = 0m/s$, $g = 10m/s^{2}$, and $t = 6s$ into the formula $v=v_0 + gt$. We get $v=0+10\times6$.

Step4: Calculate the final - velocity

$v = 60m/s$.

Answer:

C. 60m/s