Motion in 2 Dimensions

What happens to the horizontal velocity of a projectile as it travels along the curved path?

• increases

• decreases

• stays the same

• none of these

What happens to the vertical velocity of a projectile as it goes down?

• increases

• decreases

• stays the same

• none of these

Tags

NGSS.HS-PS2-4

What is the vertical acceleration of a projectile due to gravity?

• -9.0 m/s

• -9.8 m/s

• -9.8 m/s2

• -9.08 m/s2

Tags

NGSS.HS-PS2-1

• A

• B

• C

• D

• A

• B

• C

• D

A coin tossed vertically upward and it reaches the highest point in 7.0s. at the highest point, the velocity is _______.

• 9.8 m/s

• 0

• 9.8 m/s² 

• 98 m/s²

An action hero jumps from a small building 16 meters high in the air. He has a running start and is leaping off with a velocity of 10.4 m/s. How far from the building does he manage to leap?

You need time first: t = √d/((1/2)a)

d = s x t

• 18.81 m

• 166.4 m

• 1.53 m

• 26.4 m

A javelin thrower releases the javelin at 45 degrees from the horizontal at 31 m/s. Find the velocity in the x and y direction.

• x = 22 m/s

  y = 22 m/s

• x = 44 m/s

  y = 44 m/s

• x = 45 m/s

  y = 45 m/s

• x = 31 m/s

  y = 31 m/s

A sniper is doing some training with targets at certain ranges. Calculate the range the sniper is trying to hit using the information.

* You first need time: t = (Vf-Vi)/a

this will only equal half your time so multiply your answer by 2.

Then you can find range d = s x t

• 744 m

• 1409 m

• 208 m

• 5,754 m

Tags

NGSS.HS-PS2-1

After a streak of terrible games you decide to toss your keyboard out your 3 meter high window at 8 m/s. How far does you keyboard make it from your house?

You need time first t = √d/((1/2)a)

*d = s x t

• 6.25 m

• 24 m

• 5 m

• 2.67 m

Tags

NGSS.HS-PS2-1