Projectiles

Question 1

What is a projectile?

Answer 1

Object launched and moves under the influence of gravity

Question 2

Object launched from rest?

Answer 2

only gravity acting on it and no horizontal motion

Question 3

Object launched vertically upwards?

Answer 3

gravity acting against object and no horizontal motion

Question 4

For vertical motion, at the apex?

Answer 4

final vertical velocity = 0

Question 5

If object returns to original height in vertical motion?

Answer 5

Motion is identical and time is the same

Question 6

Object launched horizontally?

Answer 6

Constant horizontal velocity as no horizontal forces acting on it (a=0)
Constant vertical acceleration (-9.8ms-2)

Question 7

Horizontal distance travelled by a projectile is called?

Answer 7

range

Question 8

time taken for projectile to travel horizontally equals?

Answer 8

the time taken for it to travel vertically

Question 9

What does horizontally affect and not affect?

Answer 9

It affects time taken for object to fall vertically but affect the range of an object

Question 10

Objects launched at an angle?

Answer 10

At max height Vv=0
TIme taken to reach max height is half total time

Question 11

What is a satelite?

Answer 11

Projectile that follows a circular orbit due to its constant horizontal velocity and constant vertical acceleration

Question 12

Newton’s thought experiment

Answer 12

If a projectile is launched with sufficient to match the curvature of the earth meaning it never hits the ground. it is in a constant state of free fall