Projectile Motion

Which of the following is NOT considered a projectile motion problem?

• a football hit by a player to the air

• a golf ball on the tree struck by the driver

• a baseball thrown from the right field to second base

• a canon ball shot towards a castle wall

Projectile follow a __________ path

• parabolic

• hyperbolic

• trigonometric

• three dimensional

In the absence of air resistance, the vertical component of a projectile's velocity doesn't change as the projectile moves.

• True

• False

• Sometimes true

• Sometimes false

A projectile is fired straight upward at 100 m/s. How fast is it moving at the instant it reaches the top of its trajectory?

• - 9.8 m/s

• 9.8 m/s

• 0 m/s

• 19.6 m/s

When a bullet is fired horizontally, what is its initial vertical velocity?

• 9.8 m/s^2

• 0

• not enough information given

• -9.8 m/s^2

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 as if it was just dropped

• impossible to determine

It is the arc curve like motion-path undergone by a projectile

• Height

• trajectory

• Hmax

• angle

It is the velocity at the start of launching of a projectile

• Initial Velocity

• Final Velocity

• Height

• Range

It is the entire duration while the projectile is in its trajectory

• Initial velocity

• Final velocity

• range

• time of flight

Neglecting air resistance, the motion of a projectile launched at an angle in the x direction is

• constant velocity

• constant acceleration

• combined constant velocity AND constant acceleration

• neither velocity or acceleration is constant