1D60.20 Simultaneous Fall

If air can be ignored horizontal and vertical motion are independent. Place balls on device. Flip lever to fire.Two balls simultaneously dropped with one projected horizontally hit the floor together. They fall the same amount in same time before hitting floor. Retrieve balls before proceeding with class.

Setup Requirements: Attach device to rod and place on edge of front desk.

Equations: a=g for y component of both balls. X component is irrelevant.

Safety Issues: Align so ball will not head toward students.