Two-Dimensional Motion Physics Quiz Form
Please complete all questions below for the Two-Dimensional Motion Physics Quiz Form. Answer each question to the best of your ability.
Student Full Name
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First Name
Last Name
Class/Section
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1. Which of the following best describes a vector quantity?
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A quantity with magnitude only
A quantity with direction only
A quantity with both magnitude and direction
A quantity with neither magnitude nor direction
2. A projectile is launched horizontally from a 20 m high cliff. How long does it take to reach the ground? (Assume g = 9.8 m/s²)
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3. Which graph best represents the horizontal velocity of a projectile (neglecting air resistance)?
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A horizontal line (constant velocity)
A line that slopes upwards
A line that slopes downwards
A curve that increases then decreases
4. Calculate the magnitude of displacement for an object that moves 3 m east and then 4 m north.
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5. What is the direction (in degrees from east) of the displacement in Question 4?
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6. Which of the following is NOT affected by gravity for a projectile in ideal conditions?
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Vertical velocity
Horizontal velocity
Vertical acceleration
Time of flight
7. A ball is thrown at 20 m/s at a 30° angle above the horizontal. What is the initial vertical component of its velocity? (Round to two decimal places)
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8. Briefly explain the difference between displacement and distance in two-dimensional motion.
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9. A student claims that the acceleration of a projectile at the top of its trajectory is zero. Is this correct? Explain your answer.
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