03.4 Zero Launch Projectiles

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

Tags

NGSS.HS-PS2-1

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

• Acceleration of -10 m/s²

• Accelerations of -5 m/s²

• An increasing acceleration every second

• Constant velocity

Tags

NGSS.HS-PS2-1

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 cannon is fired horizontally from a 5.0 m tall tower. How much time will it take until the projectile hits the ground?

• 0.5 s

• 1.0 s

• 2.0 s

• 5.0 s

Tags

NGSS.HS-PS2-4

If a ball is launched horizontally at 40 m/s from a bridge, what will be the magnitude of its velocity after 3 seconds?

• 30 m/s

• 40 m/s

• 50 m/s

• 70 m/s

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

A cannonball is launched horizontally at 50 m/s from an 80 m tall cliff. How far will it go (horizontally) before hitting the ground?

• 100 m

• 200 m

• 400 m

• 800 m

A ball is thrown horizontally off a bridge at 15 m/s. Where will it be (x and y) in 1 second?

• x = 15 m

  y = -5 m

• x = 15 m

  y = -10 m

• x = 10 m

  y = -15 m

• x = 10 m

  y = -7.5 m

Tags

NGSS.HS-PS2-1

A Macaque monkey sitting 12 m up in a tree throws a nut horizontally at 11 m/s.

What is the final x velocity?

• can't tell

• 11 m/s

• 9.8 m/s

• -11 m/s

• -9.8 m/s