Projectiles Review

Which best describes the horizontal motion of a projectile, assuming no air resistance?

• Acceleration of -10 m/s²

• Acceleration of -5 m/s²

• An increasing acceleration every second

• Constant velocity

Which best describes the vertical motion of a projectile, assuming no air resistance?

• Acceleration of -9.8 m/s²

• Accelerations of -5 m/s²

• An increasing acceleration every second

• Constant velocity

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A marble traveling at 3 m/s rolls off the edge of a 1 m high table. What is its initial vertical speed?

• -10 m/s

• 0 m/s

• -3 m/s

• -15 m/s

A soccer ball is kicked horizontally off a cliff. What information is needed to find the time to fall?

• The height of the cliff

• The initial speed of the ball

• The mass of the ball

• All of these

Tags

NGSS.HS-PS2-4

A player kicks a ball across the field. At the very top, what is the acceleration of the ball?

• It is accelerating to the right

• There is no acceleration at the top

• 9.8 m/s² up

• 9.8 m/s² down

Tags

NGSS.HS-PS2-1

What is the relationship between motion in the x and y-dimensions?

• If x is greater, then y is greater

• If x is greater, then y is less

• There is no relationship; independent

Does the vertical velocity have any effect on the horizontal velocity?

• yes
• no

The more mass an object has, the faster it will fall.

• True
• False

Tags

NGSS.MS-PS2-2

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Does vertical velocity change as a projectile rises and falls?

• yes 
• no

Does horizontal velocity change if you ignore air resistance?

• yes
• no