Projectile Motion Basics

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

• Acceleration of g

• Acceleration of -5 ms^-2

• Zero velocity

• Constant velocity

• I don’t know

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

• Acceleration of -9.81ms^-2

• Accelerations of -5ms^-2

• Zero velocity

• Constant velocity

• I don’t know

Tags

NGSS.HS-PS2-1

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

• -10 ms^-1

• 0 ms^-1

• -3 ms^-1

• -15 ms^-1

• I don’t know

Tags

NGSS.HS-PS2-1

A marble traveling at 3 ms^-1 rolls off the edge of a 1 m high table. What is its initial horizontal speed?

• -10 ms^-1

• 0 ms^-1

• 3 ms^-1

• 15 ms^-1

• I don’t know

Tags

NGSS.HS-PS2-1

A player kicks a ball across the field. At the very top of its flight, what is the vertical velocity vector of the ball?

• maximum value

• - 9.81 ms^-2

• 9.81 ms^-2

• zero

• I don't know

Tags

NGSS.HS-PS2-1

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

• It is accelerating to the right

• There is no acceleration at the top

• 9.81 ms^-2

• -9.81 ms^-2

Tags

NGSS.HS-PS2-1

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 cannon is fired horizontally from a 5.0 m tall tower. How much time will it take until the projectile hits the ground? (Hint - use 'suvat' equations)

• 0.5 s

• 1.0 s

• 2.0 s

• 5.0 s

• I don't know

If a ball is launched horizontally at 40 ms^-1 from a bridge, what will be the magnitude of its vertical velocity vector after 3 seconds?

• 40 ms^-1

• 29 ms^-1

• 0 ms^-1

• 44 ms^-1

Tags

NGSS.HS-PS2-1

If a ball is launched horizontally at 40 ms^-1 from a bridge, what will be the magnitude of its horizontal velocity vector after 3 seconds?

• 40 ms^-1

• 29 ms^-1

• 0 ms^-1

• 44 ms^-1

• I don't know