Projectiles

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.MS-PS2-2

The final requirement for a degree in geology is Field Camp, an 8 week field experience in which budding geologists must complete rigorous real-world mapping projects. To celebrate the end of field camp, one student threw his rock hammer off of a 78 m cliff with a horizontal velocity of 34 m/s. He was then reminded that he had one more day of field work, so he needed to go get his hammer. How far away from the cliff did he have to walk in order to find his hammer?

• 221.78 m

• 153.23 m

• 135.65 m

• 78.98 m

Tags

NGSS.HS-PS2-4

Tad drops a cherry pit out the car window 1.0 m above the ground while traveling down the road at 18 m/s. If the car continues to travel at the same speed, where will the window be in relation to the pit when it lands?

• Right above the pit still.

• Behind the pit.

• In front of the pit.

Tags

NGSS.MS-PS3-1

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 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

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

What is the initial y velocity?

• 9.8 m/s

• -9.8 m/s

• 11 m/s

• 0 m/s

A Macaque monkey sitting 12 m up in a tree throws a nut horizontally. How long will it take the nut to hit the ground?

• 2.45 s

• 4.32 s

• 1.56 s

• not enough information

Tags

NGSS.MS-PS2-4

Billy-Joe stands on the High Street Bridge in Hamilton Ohio kicking stones into the water below. If the stone had been kicked faster, how would this affect the time it would take to fall?

• More time

• Less time

• Same time

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is true about the vertical velocity of a projectile launched horizontally?

• It is initially at its maximum value.

• It increases due to gravity as it falls.

• It remains constant throughout its trajectory.

• It decreases as it falls due to gravity.