Describing Motion

Physics studies matter, motion, forces, and energy through space and time.

Is how far an object travels in total

Describes the net distance and direction travelled from start point to finish point

Are quantities that can be full described by their magnitude (size).

Are quantities that have a direction as well as a magnitude.

• Distance • Mass • Energy • Speed

• Acceleration • Velocity • Displacement • Force

The average speed of an object shows us how far an object moves in a certain time

Would be the speed any given instant within that span of time, measured with a speedometer.

The rate the rate at which the distance of an object is changing

Is the rate at which displacement of an object is changing. Velocity includes direction.

Is the rate of change of velocity. It can be positive or neagative.

Deceleration- slowing down Speeding up in a negative direction- reversing

They are applied directly to the body through physical contact. When the contact ceases so does the force.

hitting a ball, collision

It is applied without direct contact. The force never ceases to act upon the body, no matter how small the force is or becomes.

• Change of object’s speed • Change of object’s direction -Change of object’s shape

Is a push or pull of an object. It is a vector quanitity.

Magnetism, electrical forces

It is a combined effect of all the forces acting on an object. If the forces are in the same direction, magnitudes are added. If they are in the opposite direction, magnitudes are subtracted.

They are described as balanced when the net force is equal to 0N. The object will remain motionless or travel at a constant velocity.

They are described as unbalanced when the net force is greater than zero in a given direction

Every object continues in a state of rest or constant velocity unless acted upon by an unbalanced force.

Without an unbalanced force acting on an object, they will continue to do what they are doing forever.