Examples of Projectile Motion Problems:

1. A ball is launched into the air at an angle of 32.0 ^o with an initial speed of 18.0 m/s. Neglecting air resistance, determine how long the ball will be in the air ?
2. A rock is launched from the ground into the air. After 1.40 seconds the rock is observed to have a speed of 22.0 m/s at an angle +18.0 ^o above horizontal. Neglecting air resistance, with what speed was the rock launched ?
3. A ball is tossed into the air at a speed of 64.0 m/s at an unknown angle. If the ball is observed to rise to a maximum height of 7.80 m, at what angle was the ball thrown relative to the ground ?
4. An object is launched from the ground into the air at an angle of 38.0 ^o (above the horizon) towards a vertical brick wall that is 15.0 m horizontally from the launch point. If the ball takes 1.30 seconds to collide with the wall, with what speed was the ball launched ?