Projectile Motion

At what point is v_x= 0 m/s?

• A

• B

• C

• D

• None of these points

A ball thrown straight up takes 8 total seconds to complete its journey all the way up and down. 1 second into its journey and 7 seconds into its journey the magnitude of its velocity will be ______________ and its direction _______________.

• opposite, the same

• the same, opposite

• the same, the same

• opposite, opposite

Tags

NGSS.MS-PS2-2

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

• 2m

• 10m

• they both will hit the ground at the same time

Tags

NGSS.MS-PS2-4

Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a

horizontal velocity?

• the launched ball

• the dropped ball

• they both hit at the same time

Tags

NGSS.MS-PS2-4

What is the velocity of an object launched straight up at its highest point?

• zero

• equal to its v_x

• ½ its maximum value

• equal to gravity

What is the horizontal acceleration of a projectile in real life?

• 0 m/s²

• 9.8 m/s²

Tags

NGSS.HS-PS2-1

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

What is the horizontal acceleration of a projectile?

Tags

NGSS.HS-PS2-1

What force acts in the y direction that causes an object to follow a parabolic path?

• tension

• friction

• gravity

• no force

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What is the direction of the acceleration for any projectile?

• The direction the projectile is traveling.

• Down

• Up

• Sideways

Tags

NGSS.HS-PS2-1