Explain Why the Following are False:

1. The instantaneous vertical velocity at a projectile's peak is always > 0.

2. Airborne time for a projectile is dependent on the Vx component of the initial velocity.

3. The range equation: R = (V^2sin2)/9.8 can be used for projectiles launched off cliffs to find the distance to the ground below.

Explain Why the Following are True:

1. The range and height of a projectile is independent of its mass.

2. The range equation listed above can only be used when the initial and final heights of a projectile are the same.