Vertical motion of bodies
Answers are for parents and teachers.
1
A body is thrown vertically up at 50 m/s (g = 10 m/s²). What is its maximum height (m)?
125
2
A stone dropped from rest from a tower hits the ground after 5 s (g = 10 m/s²). How high is the tower (m)?
125
3
A body thrown downward has a speed of 32 m/s after 2 s. What was its initial speed (m/s)? (g = 10 m/s²)
12
4
A body thrown up returns to the starting point after 8 s (g = 10 m/s²). What was its initial speed (m/s)?
40
5
Why do free-fall formulas stop working for a parachutist after a short time?
Air resistance grows with speed until it balances gravity and the acceleration approaches zero.