Physics pg 287

Question 1

What is represented by the gradient of a distance time graph?

Answer 1

Velocity

Question 2

What is represented by the gradient of a velocity time graph?

Answer 2

Distance

Question 3

Explain why if a horse stops running when it comes to a fence, its rider can be thrown over the top?

Answer 3

Because of the equal amount of force and the g’s still apply to u

Question 4

Newtons first law

Answer 4

Objects will keep doing what is was doing unless acted upon an unbalanced force eg (pencil on a table being picked up)

Question 5

What is the law of intertia?

Answer 5

More the mass an object is, the more intertia it has which makes it harder for it to change motion

Question 6

Newtons third law

Answer 6

For every action there is a Equal and opposite reaction

Question 7

Newtons second law

Answer 7

Force= mass times acceleration (F=MA)

Question 8

Displacement

Answer 8

Change in positon

Question 9

Force

Answer 9

Push pull or twist

Question 10

Velocity

Answer 10

Speed average

Question 11

How to convert a speed from km/h into m/s

Answer 11

Divide by 3.6 then timesvice versa

Question 12

Triangle

Answer 12

Distance = velocity times time
Velocity= distance divided by time
Time= distance divided by velcoity

Question 13

How do you calculate acceleration?

Answer 13

Change in speed divided by time or rise over run

Question 14

Positive acceleration

Answer 14

gaining speed

Question 15

negative acceleration

Answer 15

Loosing speed

Question 16

A=(Vf-Vi) time

Answer 16

Acceleration = final speed- start speed ) /time

Question 17

Average speed equals

Answer 17

Total distance take away time