Moving Objects

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  • Created by: Jessica
  • Created on: 27-05-10 14:29

Forces.

  • When 2 forces interact they exert EQUAL and OPOSITE forces on eachother.
  • The RESULTANT force has the same effect as the sum of a number of forces all acting together on an object.
  • Balanced forces.- resultant force = zero. An object will either remain stationary or continue at a constant speed.
  • Unbalanced forces.- Resultant forces will be higher on one side. Object will accelerate. (speed up, slow down, or change direction.)

FORCE (N) = MASS (Kg) x ACCELERATION (m/s2).

  • Distance time graphs.- Slope represents speed. Steeper the slope, the larger the speed.

SPEED = DISTANCE TRAVELLED (m) / TIME TAKEN (s).

  • Velocity time graphs.- The slope represents acceleration. Steeper slope means larger acceleration.

The area under the velocity time graph represents distance travelled.

ACCELERATION (m/s2) = CHANGE IN VELOCITY (m/s) / TIME TAKEN (s).

On the Road.

  • Frictional forces always oppose motion.
  • Moving Vehicles experiance air

Comments

Matty Bentley

This helped out a lot. I'm only doing my mocks at the moment, but when it comes time for my actual GCSE, I'm coming straight back here!

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