Projectile Motion Basics

What do you call the horizontal distance travelled by a projectile?

• path

• trajectory

• range

• parabola

The following quantities are important in the study of a projectile motion EXCEPT ______.

• speed of the projectile

• mass of the projectile

• height of release

• time covered

At what point is v_y= 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.HS-PS2-1

The initial horizontal velocity of a projectile is ____ its final horizontal velocity.

• less than

• equal to

• greater than

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

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

• the launched ball

• the dropped ball

• they both hit at the same time

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

An object is projected horizontally from a cliff.  The time it takes to hit the ground is

• more than if it was just dropped

• less than if it was just dropped

• the same amount of time than if it was just dropped

• impossible to determine

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

• increases

• decreases

• stays the same

• none of these