Physics 11

WS 7.4 - Projectiles

1. A ball is pushed off of a 120.0 m building at a horizontal velocity of 16.0 m/s. Determine

a. the velocity the ball reaches just before it hits the ground below the building. 51.1 m/s

b. the distance the ball lands away from the building at the ground level. 79.2 m

c. the time it takes to reach the ground. 4.95 s

2. A cannon fires a cannonball at a velocity of 208 m/s at an angle of 56˚. Determine

a. the maximum height the cannonball reaches. 1516 m

b. the range of the cannonball. 4092 m

c. the time of flight. 35.2 s

3. A rifle fires a bullet at a velocity of 500.0 m/s at an angle of 16˚. Determine

a. the maximum height the bullet reaches. 969 m

b. the range of the bullet. 13 500 m

c. the time of flight of the bullet. 28.1 s

4. A physics student drops a steel ball out of a car window. The car’s speed is 40.0 m/s. The height of the window is 1.30 m. Calculate

a. the time it takes for the ball to hit the ground. 0.52 s

b. the horizontal distance traveled by the ball while falling. 20.8 m

c. the horizontal velocity of the ball as it hits the ground. 40 m/s

d. the overall speed of the ball as it hits the ground. 40.3 m/s