It is easy to find the time it takes the object to fall 20 m, then double that time.
timetofall:
hf=hi+1/2 g t^2
t=sqrt(20*2/9.8)
then double that time.
a stone is projected vertically upward and reaches a maximum height of 20m before it returns to the thrower find the total time taken
1 answer
1 answer