The average height of an apple tree is 4.00 meters. How long would it take an apple falling from that height to reach the ground?
Given: g = -9.8 meters/second2

A.) 0.90 sec.
B.) 1.0 sec.
C.) 1.53 sec.
D.) 2.3 sec.

Question

The average height of an apple tree is 4.00 meters. How long would it take an apple falling from that height to reach the ground?
Given: g = -9.8 meters/second2

A.) 0.90 sec.
B.) 1.0 sec.
C.) 1.53 sec.
D.) 2.3 sec.

anonymous · Answer

well the dissplacement which is 4m can be given by s=1/2gt^2 now lets insert the known values into this ignoreing the (-) 4m=1/2(9.8xt^2) all you need to do now is change the subject of the formulea to slove for time.$$\sqrt{\frac{ 2s }{ g }}=t$$ and you con calculate the rest. answer should be (A)

anonymous · Answer

thank you! @zakisista

anonymous · Answer

your welcome, if you do not fully understand this then please ask me, i would love to help.