Question

An acorn falls from a tree and hits the ground in 0.8 s. How far did the acorn fall . Use g = 9.8 m/s^2. Round your final result to the nearest tenth.

Answer 1

The distance covered by the acorn is 3.136 m.

Step-by-step explanation:

The time taken for the acorn to hit the ground is 0.8 s. As it is a free fall, the acorn will be completely under the influence of gravity. So the acceleration will be acceleration due to gravity.

Then using the second law of equation,

`s=ut+(1)/(2)gt^(2)`

Since the initial velocity and time is zero, then the time taken to reach the ground is stated as 0.8 s, so

`s=0+\left((1)/(2) * 9.8 * 0.8 * 0.8\right)=(6.272)/(2)=3.136 \mathrm{m}`

So the distance covered by the acorn is 3.136 m.