Unit 2 - Two Dimensional Motion

Which of the following is a physical quantity that has a magnitude and direction?

• Vector
• Scalar
• Resultant
• Frame of Reference

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NGSS.HS-PS2-4

A duck waddles 2.5 m east and 6.0 m north. What is the magnitude and direction of the duck’s displacement with respect to its original position?

• 3.5 m at 19⁰ north of east
• 6.3 m at 67⁰ north of east
• 6.5 m at 67⁰ north of east
• 6.5 m at 72⁰ north of east

An athlete runs 110 m across a level field at an angle of 30⁰ north of east. What are the parallel (east) and perpendicular (north) components, respectively, of this displacement?

• 64 m; east; 190 m ; north
• 190 m; east; 64 m; north
• 95 m; east; 55 m; north
• 55 m; east; 95 m; north

What is the path of a projectile?

• Wavy line
• Parabola
• Hyperbola
• Projectiles don't follow a predictable path.

Which of the following is an example of projectile motion?

• A person diving into a pool from a diving board

• A rocket blasting off into the upper atmosphere

• A leaf falling from a tree

• A train moving along a flat track

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NGSS.HS-PS2-4

Which of the following does NOT exhibit projectile motion?

• A frog jumping from land into water
• A basketball thrown towards a hoop
• A flat piece of paper released from a window
• A baseball thrown to home plate

Which would hit the ground first if dropped from the same height in a vacuum (empty space with no air), a flat piece of paper or a bowling ball?

• Flat piece of paper

• Bowling ball

• They would hit the ground at the same time.

• They would be suspended in the vacuum.

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NGSS.MS-PS2-4

What is true about the horizontal motion of a projectile?

• It accelerates backwards at 9.8 m/s²

• It accelerates forwards at 9.8 m/s²

• It moves at a constant horizontal velocity.

• It cannot be determined.

What is true about the vertical motion of a projectile?

• It accelerates downwards at 9.8 m/s²

• It accelerates upwards at 9.8 m/s²

• It moves at a constant vertical velocity.

• It cannot be determined.

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NGSS.HS-PS2-1

If you drop a banana, how fast is it going after 2 seconds?

• 4.9m/s
• 9.8m/s
• 19.6m/s
• 29.4m/s

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NGSS.HS-PS2-1

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