posted by Anonymous .
A toy car runed off the edge of a table that is 1.225m high. If the car lands 0.400m from the base of the car to fall,
a)how long does it take the car to fall
b)what is the horizontal velocity of the car?
Actually, the time to fall is
T = sqrt (2H/g).
That seems to be what you did, but you were incorrect in writing
-0.25 = .50
Also since you are measuring distance down, forget the minus sign.
Once you get the time T, use
T = D/Vx to get the horizontal velocity, Vx.