DIRT BIKES

NEWTONS 1ST LAW

• Object will stay in motion unless force acts on it

DIRT BIKES

• push on the throttle
• Bike starts moving
• Apply breaks to stop bike

NEWTON'S SECOND LAW

• F=ma
• Force = mass x acceleration

ACCELERATION

• Change in speed
• Caused by force
• Directly proportional to net force

Acceleration is a change of velocity/ time interval

DIRTBIKES

• Constantly changing speed
• Use throttle to accelerate
• Use brakes to deccelerate

DIRT BIKES

• Going uphill - more speed
• Going downhill - less speed

NEWTONS THIRD LAW

• For evey action there is an equal and opposite reaction

DIRTBIKES

• Give it gas - mud flings up

EXAMPLE 2

• Push in the throttle
• Tire spins
• Bike accelerates

EXAMPLE 2

• More gas you give
• Faster tire spins
• Faster bike moves