Moving Objects

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…