Question

A ball dropped from rest falls freely until it hits the ground with a speed pf 20 m/s. The time during with the ball is in free fall is approximately

Answer 1

Answer:2.0second

Step-by-step explanation:

Answer 2

`\large \boxed{\text{2.0 s}}`

Step-by-step explanation:

`\begin{array}{rcl}v & = & gt\\\text{20 m$\cdot$s}^(-1) & = & \text{9.807 m$\cdot$ s}^(-2) * t\\t & = & \frac{20}{9.807 \text{ s}^(-1)}\\\\& = & \textbf{2.0 s}\\\end{array}\\\text{The ball is in free fall for $\large \boxed{\textbf{2.0 s}}$}`