PHYS 1403

Pretest 3

1) Two balls of the same size are released from the same
height at the same time. Ball 1 is simply dropped. (Its initial velocity is
zero.) Ball 2 has an initial velocity, v, **parallel** to the ground.

Consider each of the following cases:

a) The balls each have the same mass. Which ball will hit the ground first? Explain your reasoning.

b) Ball 1 has mass m_{1} = 5kg. Ball 2 has mass m_{2}
= 7kg. Which ball will hit the ground first? Explain your reasoning.

c) Ball 1 has mass m_{1} = 7kg. Ball 2 has mass m_{2}
= 5kg. Which ball will hit the ground first? Explain your reasoning.