Chapter 7 - Motion

Question 1

What is a projectile?

Answer 1

Any object acted upon only by the force of gravity.

Question 2

What is the acceleration of a projectile? What is the direction of its acceleration?

Answer 2

The acceleration of a projectile is always equal to g (9.81) and is always downwards.

Therefore, the acceleration only affects the vertical motion of an object.

Question 3

The horizontal velocity of a projectile is _______.

Answer 3

The horizontal velocity of a projectile is constant.

Question 4

What is free fall?

Answer 4

The motion of an object undergoing an acceleration of ‘g’.

The only force acting on an object in free fall is weight.

Question 5

All objects in free fall accelerate at ______ ____ rate.

Answer 5

All objects in free fall accelerate at the same rate.

Question 6

In projectile motion calculations, you have to think of horizontal and vertical motion ________.

Answer 6

In projectile motion calculations, you have to think of horizontal and vertical motion separately.