Rockets II - Projectile Motion

A freshman runs off the bleachers and onto the football field as shown in the figure at right. The freshman’s horizontal velocity is 8 m/s.

How many seconds would it take for him to land on the ground? Assume gravity is 9.81 m/s².

• 1.41 s

• 1.32 s

• 2.14 s

• 1.53 s

A freshman runs off the bleachers and onto the football field as shown in the figure at right. The freshman’s horizontal velocity is 8 m/s.

How far will the freshman have moved horizontally when he hits the ground? Assume gravity is 9.81 m/s².

• 9.78 m

• 12.12 m

• 11.31 m

• 10.49 m

A freshman runs off the bleachers and onto the football field as shown in the figure at right. The freshman’s horizontal velocity is 8 m/s.

What would be the freshman's final vertical velocity right before he lands on the ground? Assume gravity is 9.81 m/s².

• 12.21 m/s

• 14.14 m/s

• 13.1 m/s

• 15.8 m/s

At what point is v_y= 0 m/s?

• A

• B

• C

• D

• None of these points

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity? What is the horizontal component of the cannonball’s velocity?

• -625 m/s; 625 m/s
• 441.9 m/s; 441.9 m/s
• -441.9 m/s; 441.9 m/s
• 0 m/s; 625 m/s

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How long until the cannonball hits the ground?

• 75.4 s
• 45.2 s
• 62.3 s
• 90.2 s

Tags

NGSS.HS-PS2-4

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How high did the cannonball travel?

• 9963 m
• 39,771 m
• 7.22 m
• 17183.25 m

Tags

NGSS.HS-PS2-4

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. What is the vertical component of the ball’s velocity? What is the horizontal component of the ball’s velocity?

• 24.9 m/s; 60.1 m/s
• 60.1 m/s; 24.9 m/s
• 0 m/s; 65 m/s
• 17183.25 m

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

• 500.76 m
• 31.63 m
• 103.7 m
• 305.05 m

Tags

NGSS.MS-PS3-1

A pool ball leaves a 0.60-meter high table with an initial horizontal velocity of 2.4 m/s. Predict the time required for the pool ball to fall to the ground and the horizontal distance between the table's edge and the ball's landing location.

• 0.122 s

• 0.35 s

• 0.246 s

• 0.181 s