Projectile motion review

At what point is v_y= 0 m/s?

• A

• B

• C

• D

• None of these points

At what point is v_x= 0 m/s?

• A

• B

• C

• D

• None of these points

Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground first?

• A

• B

• Both at the same time

Tags

NGSS.MS-PS2-4

A ball is thrown into the air at some angle, with initial velocities v_x (horizontal) and v_y (vertical). At the very top of the ball’s path:

What is its velocity in the horizontal direction?

• v_x

• Greater than v_x

• Zero

In the absence of air resistance, the angle at which a thrown ball will go the farthest is?

• 90°

• 30°

• 60°

• 45°

A package is dropped from an airplane, where will the package hit the ground?

• A

• B

• C

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object will hit the ground first?

• A
• B
• Both objects hit the ground at the same time
• unable to determine with the given information

The shape of the path a projectile follows...

• circular
• linear
• wavy
• parabolic

Which of the following statements about the horizontal and vertical components of projectile motion is true?

• Changes in the horizontal component occur only when the vertical component changes.

• Both the horizontal and vertical components are always constant.

• The vertical component changes while the horizontal component stays the same.

• The horizontal and vertical components are dependent of each other.

A projectile is launched at 68.0° above the horizontal and at a speed of 55 m/s. How long will it take the projectile to reach maximum height?

• 1.8 s

• 3.2 s

• 4.5 s

• 5.2 s

Tags

NGSS.HS-PS2-1