Horizontal Projectiles

Which of the following would not be projectile motion?

• a thrown baseball

• a water droplet in a waterfall

• a car driving on a horizontal surface

• a cannonball launched out of a cannon

Which of the following is a vector quantity?

• Distance

• Speed

• Time

• Velocity

How does the horizontal speed of a projectile change in the air?

• It increases at a rate of 10 m/s per second.

• It decreases at a rate of 10 m/s per second.

• It stays the same

• It increases at an increasing rate

How does the vertical speed of a projectile change in the air?

• It increases at a rate of 10 m/s per second.

• It decreases at a rate of 10 m/s per second.

• It stays the same

• It increases at an increasing rate

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A rock is launched horizontally at speed v off a cliff with a height H. Suppose the height of the cliff is halved to H/2. How would the horizontal distance the rock travels change?

• The horizontal distance would stay the same

• The horizontal distance would decrease

• The horizontal distance would increase

• Cannot be determined without numerical values

A rock with a mass 2 kg is thrown horizontally at 20 m/s off a 100 m tall cliff.

• 63 m/s

• 89 m/s

• 126 m/s

• 71 m/s

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

An object is thrown horizatally at 30 m/s off a 80 m tall cliff. Calculate the speed at which it hits the ground.

• 35 m/s

• 50 m/s

• 70 m/s

• 120 m/s

Tags

NGSS.HS-PS2-4

An object hits the ground with a horizontal velocity of 25 m/s and a vertical velocity of 45 m/s. Calculate the angle the object's path makes with the ground.

• 61 degrees

• 56 degrees

• 34 degrees

• 29 degrees

What topics should be gone over before the test?

• Projectiles - Finding time in air

• Projectiles - Finding Final Speed

• Vectors - Finding Components

• Vectors - Finding Magntiude/Direction

• Adding Vectors

Tags

NGSS.HS-PS2-1