Projectiles

1- A projectile is launched horizontally from the top of a 45.2-meter high cliff and lands a distance of 17.6 meters from the base of the cliff. Determine the magnitude of the launch velocity.

• 5.9 m/s

• 3 m/s

• 52.8 m/s

• 1.9 m/s

2- What is the horizontal acceleration of a projectile?

• 0

• 9.8

Tags

NGSS.HS-PS2-1

3- An object is projected horizontally from a cliff. The time it takes to hit the ground is

• more than if it was just dropped

• less than if it was just dropped

• the same amount of time than if it was just dropped

• impossible to determine

4-When a ball is projected horizontally, what is its initial vertical velocity?

• 0

• 9.8

• -9.8

• not enough information given

5- What is the shape of the path of any projectile?

• Hyperbolic

• Linear

• Parabolic

• Logarithmic

5- You launch three identical parabolic projectiles from the same cannon. The launch angle for all three projectiles was 30^∘. The initial launch velocities were different.

Projectile #1 was launched at 30 m/s

Projectile #2 was launched at 20 m/s.

Projectile #3 was launched at 10 m/s.

Which projectile had the longest time of flight?

• Projectile #1

• Projectile #2

• Projectile #3

• All had equal times of flight.

7-You launch three identical parabolic projectiles from the same cannon. The initial launch velocity for all three projectiles was the same at 30 m/s. The launch angles were different.

Projectile #1 was launched at an angle of 20^∘.

Projectile #2 was launched at an angle of 30^∘.

Projectile #3 was launched at an angle of 60^∘.

Which projectile had the longest time of flight?

• Projectile #1

• Projectile #2

• Projectile #3

• All had equal times of flight.

8- How is horizontal velocity calculated for a projectile fired at an angle?

• V cos Θ

• V sin Θ

• V tan Ɵ

9- A baseball is thrown at a 22.5° angle and an initial velocity of 40 m/s. Assume no air resistance. How high does the ball go?

• 0 m

• 15.31 m

• 12.08 m

• 11.7 m

10- A projectile is launched with a horizontal velocity of 20 m/s and an initial vertical velocity of 20 m/s. Which graph correctly shows the horizontal velocity of the projectile over time?

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