Projectiles and satellites move in curved paths due to the effects of gravitational force. By considering motion in horizontal and vertical directions, we can predict their path.

Which statement best describes what happens to the HORIZONTAL velocity of a projectile?

It increases (accelerates)

It decreases (decelerates)

It remains constant

Which statement best describes what happens to the VERTICAL velocity of a projectile?

It accelerates downwards

It accelerates upwards

What force do we ignore when doing calculations involving projectiles?

Friction

Air resistance

Gravity

An apple falls from a tree and hits the ground with a speed of

How long will the apple take to reach the ground?

What was the initial height of the apple?

m

An aeroplane flying horizontally at drops a package to a remote village.

The package hits the ground later.

What is the vertical speed of the package just as it hits the ground?

What is the horizontal distance travelled by the package before it lands?

An aeroplane flying horizontally, without changing direction, at drops a package to a remote village.

As the package hits the ground at the village, where is the aircraft?

Approaching the village

Directly overhead

beyond the village