2-D Kinematics and projectile motion practice problems Hints: Resolve the initial velocity vector into x and y components Horizontal and vertical components of displacement at any instant can be given by: Horizontal and vertical components of velocity at any instant can be given by: Solve horizontal and vertical components separately The final position and velocity can be obtained from their separate components 1) A stunt pilot is flying at 15 m/s parallel to the flat ground 100m below. How large must the distance x from plane to target be if a sack of flour released from the plane is to strike the target? 2) A baseball is thrown with an initial velocity of 100 m/s at an angle of 30 above the horizontal. How far from the throwing point will the ball return to its original level? 3) A ball is thrown from the top of one building toward a tall building 15m away. The initial velocity of the ball is 6m/s at an angle of 40 above the horizontal. How far above or below its original level will the ball strike the opposite wall? 4) A plane traveling at 70 m/s drops a box of supplies. What horizontal distance will the box travel before striking the ground 340m below?