Question

Draw the Acceleration Versus Time graph for an object that is dropped from the top of a building and has no initial speed. Label any known values. Assume there is no air resistance. Hint: the object is moving down so its acceleration will be negative.

Answer 1

When object is dropped from to of the building then during it fall the net force on it is only due to gravity which act downwards

so we will have

`F_(net) = mg`

now we have

`ma = mg`

`a = g = -9.8 m/s^2`

so during it's fall the net force force on the ball is constant and hence the acceleration is constant which is 9.8 m/s/s during its fall

Since there is no consideration of air drag so we have this value of acceleration to be constant through out the motion

and this graph will be a horizontal straight line for complete time