2. An arrow is launched horizontally from a bow with a speed of 45 m/s. What time is required for the arrow to strike a bullseye target 34 meters away?

1. A ball is thrown upwards with an initial velocity of ; = 44 m/s at an angle of above the horizontal. It travels a distance Ar = 75 m in the horizontal direction and lands at its original height. What is 0? (Hint 1: examine the ball's motion in both the x and y directions. Hint 2: you may need to use that sin(0) cos(0) = (1/2) sin(20). Hint 3: There are two solutions to this problem; try to find both.) Take g = 9.81 m/s² and show all your work.

A projectile is shot from the launcher at 6.5 m/s horizontally. It lands 3 meters away horizontally. What is the starting height of the projectile?

2. A child standing at a third story window (25 meters above the ground) throws a baseball at an angle of 30° above the horizontal with an initial velocity of 20 m/s. How far from the building does the ball hit the ground?

7. You are sitting in a helicopter that is climbing directly upward at a constant velocity of 2.5 m/s. The helicopter door is open, and you notice that a small screw slips out the door. You can assume the screw has no horizontal component to its velocity. (a) What is the velocity of the screw 4.0 s after falling out of the helicopter? (b) How far below the helicopter is the screw at this time?

5. A projectile is launched at an angle of 50° with the horizontal and a speed of 25 m/s. a) What is the Range of the projectile? b) What is its height after 1.5 second?

A potato is launched from the ground at an 73 degree angle with a velocity of 48 m/s.   How many seconds is the projectile in the air?

4. A hockey player makes a shot 4m away from goal at a horizontal velocity of 15 m/s. How long does the goalie have to react to the shot?

11.A blue person throws an object with an initial velocity of 25.0 m/s at an angle of 37.0°. A green person stands 15.0 meters in front of the blue person and throws an object straight up. Assume that both objects are thrown from the same initial elevation. a) If the green person throws their object with an initial speed of 20.0 m/s, at what time should they throw it such that it strikes the other object while it is traveling upward? Measure this time relative to when the blue person throws their object? b) If both people throw their objects at the same time, with what initial speed must the green person throw their object such that they collide? Answers: a) ~0.267 s b) ~15.0 m/s