phy moment

How to find distance travelled from time velocity graph

Area underneath graph

How force on pedal causes moment about rear axle

-force on pedal causes moment moment about pedal axel

-pedal axel causes force on chain

-force on chain causes moment about rear axel

Whats moment

Turning effect of a force about a pivot

one way to calculate acceleration

Final velocity² - initial velocity² /2x distance

In vector diagram Whats magnitude and direction of force

Magnitude= hypotenuse (using Pythagoras)

Direction=angle degrees

What’s the meaning of momentum is conserved

Momentum of system before collision is equals to the momentum after collision

(Momentum =mass x velocity)

Another way of calculating velocity

Velocity= momentum/mass

How do foam pads reduce injury when players collide

-force= change in momentum/change in time

-foam pads increase time take for collision

-for same change in momentum

-reduce force on players so less likely of injury

Inertia

Tendency of an object to resist a change in its velocity