2. A 0.20 kg pine coned falls from a branch 18 m above the ground. (a) With what speed would it hit the ground if air re
Posted: Fri Jul 15, 2022 7:38 am
2. A 0.20 kg pine coned falls from a branch 18 m above the ground. (a) With what speed would it hit the ground if air resistance can be ignored? (b) If it actually hits the ground with a speed of 10 m/s, what was average force of air resistance exerted on it?