Mechanics level 2 physics

Question 1

Sophie (70Kg) collides head on with Emma (60Kg), how can Emma even out the affect of the crash?

Accepted Answer

Emma can run with a higher (opposite) velocity to Sophie's

Question 2

A stone falls for 25m , what is the equation needed to find the final velocity?

Accepted Answer

vf2 = vi2 +2ad

Question 3

How many Laws did Newton make up to test Level 2 students?

Accepted Answer

Inertia, acceleration and opposite makes 3

Question 4

To split a velocity into vertical and horizontal components who should help you?

Accepted Answer

No one, I have this (SOHCAHTOA)

Question 5

A stone falls for 14 seconds, what is the equation needed to find the final velocity?

Accepted Answer

vf = vi + at

Question 6

If Mrs Whight drives at 100km/h in a 1200kg car and hits the stationary blue Fiat (900Kg)

Accepted Answer

Cars add together, so new velocity is 120000/2100 = 57 km/h

Question 7

A stone falls forever , what is the equation needed to find the final velocity?

Accepted Answer

no equation. vf happens when weight force = air resistance

Question 8

Does centrifugal force make you dizzy?

Accepted Answer

O2 is wasted on students who study apparent forces: yes, No, centripetal force creates circular motion

Question 9

A ball is kicked at 15ms-1 30o to the horizontal. What is it's vertical velocity component

Accepted Answer

15 x sin 30

Question 10

A ball is kicked at 15ms-1 30o to the horizontal. What is it's horizontal velocity component

Accepted Answer

15 x Cos 30

Questions 10