projectiles

objects that are actually projectiles

• Any object falling with no air resistance

• An airplane flying through the air

• A falling skydiver with an open parachute

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

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

• 52.8

• 3

• 1.9

What is the horizontal acceleration of a projectile?

• 0

• 9.8

• -9.8

Tags

NGSS.HS-PS2-1

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

• more than if it was just dropped

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

• less than if it was just dropped

• impossible to determine

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

• 0

• 9.8

• -9.8

• not enough information given

What is the shape of the path of any projectile?

• Parabolic

• Hyperbolic

• Linear

• Logarithmic

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 #3

• Projectile #1

• Projectile #2

• All had equal times of flight.

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.

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

• V sin Θ

• V tan Ɵ

• V cos Θ

A basketball 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

• 15.31

• 12.08

• 11.7