Chapter 4 - Linear Motion

Question 1

What is a projectile?

Answer 1

Any object that moves through the air or space, acted on only by gravity (and air resistance, if any.)

Question 2

What are the components of a vector?

Answer 2

The two vectors at right angles that add up to a given vector.

Question 3

Does the vertical component of velocity of a projectile have any effect on the horizontal component of velocity of the projectile?

Answer 3

No. The perpendicular components of a vector are independent.

Question 4

Describe the horizontal component of velocity of a projectile.

Answer 4

The horizontal component of velocity of a projectile remains constant throughout its flight (assuming no air resistance.)

Question 5

Describe the vertical component of velocity of a projectile.

Answer 5

The vertical component of a projectile’s velocity is like the motion for a freely falling object.

Question 6

What is the initial vertical velocity of a horizontally launched projectile?

Answer 6

Zero.

Question 7

What is the range?

Answer 7

The horizontal distance traveled by a projectile.

Question 8

What launch angle will give you the maximum range for a projectile?

Answer 8

45 degrees.

Question 9

What is the vertical velocity of a projectile at its highest height?

Answer 9

Zero.