Question
A 143-g baseball is dropped from a tree 13.0 m above the ground.
With what speed would it hit the ground if air resistance could be ignored?
If it actually hits the ground with a speed of 8.00 m/s , what is the magnitude of the average force of air resistance exerted on it?
With what speed would it hit the ground if air resistance could be ignored?
If it actually hits the ground with a speed of 8.00 m/s , what is the magnitude of the average force of air resistance exerted on it?
Answers
bobpursley
ignoring air resistance?
V^2=2gh
2nd part:
1/2 m vf^2+frictionforce*h=mgh
solve for frictionforce
V^2=2gh
2nd part:
1/2 m vf^2+frictionforce*h=mgh
solve for frictionforce