An object is in freefall. It remains in freefall for 5 seconds before it hits the ground. How high was the object when it first started falling if its starting velocity was 0? (Acceleration due to gravity is -9.8 meters/second^2).

Question

chaise · Answer

Are you supposed to solve this using integration?

anonymous · Answer

h= .5 * 9.8 * 5*5=122.5

anonymous · Answer

where do you get .5? and isn't it -9.8m/s^2?

anonymous · Answer

i agree w/ ur answer... but how do u come up w/ that? :)

anonymous · Answer

yup
use the formula for free fall as h=1/2 g t^2

anonymous · Answer

what are the other formulas you know about this topic: velocity and acceleration?