Topic 2.1: Motion I

Question 1

What happens if a object is given a velocity at any angle to the horizontal and there is no air resistance?

Answer 1

The object will have a contant horizontal velocity, but a changing vertical velocity with constant vertical acceleration (due to gravity)

The motion will also be parabolic

Question 2

Do the horizontal and vertical components of displacement, velocity and acceleration depend on each other?

Answer 2

No

Horizontal and vertical components of displacement, velocity and acceleration are independent

Question 3

Is there acceleration horizontally?

Answer 3

No.

Acceleration due to gravity is at 90 degrees to the horizontal

Question 4

What is the formula for horizontal distance travelled (range)?

Answer 4

Range = S = U * t
(horizontal displacemet = horizontal velocity * time)

Question 5

What formulas are used to find the vertical motion?

Answer 5

The equations of motion in a straight line

Question 6

What problems can be solved with the principle of conservation of energy?

Answer 6

We can use the principle of conservation of energy to solve problems about throwing stuff off cliffs (and other problems about motion)