The Song Bird Music

Suppose you drop 20 kg rock from a height of 5 m above a recently watered lawn. When the rock hits the ground,?

Suppose you drop 20 kg rock from a height of 5 m above a recently watered lawn. When the rock hits the ground, how much force does the ground exert on the rock during the collision?
1. 200 N
2. 400 N
3. 600 N
4. 1000 N
5. More information is needed.

use newton’s law F=mgh
m=20kg
h=5m
g=take as 10m/s^2
then sub F=20kg x 5m x 10m/s^2=1000N answer is (4)
gud luck.!

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