CHS Yr 10 Science Fast and Furious

1st Topic for Year 10 Science

scalar measurement

A measurement that only has magnitude and no direction.

examples of Scalar

Mass, Speed, Temperature, Distance

vector measurement

A measurement that has both magnitude and direction.

examples of vector measurements

Velocity, Acceleration, Momentum, Displacement and Forces

Distance

The total length of the pathway taken between the starting and finish point of a journey.

displacement

The location of something relative to the journey’s starting location. Not based on the path taken between the two points.

Formula for Calculating Speed on a Distance Time Graph

Distance/Time, Rise/Run, Gradient

Formula for Acceleration

Change in Speed/Change in Time

Acceleration on a Velocity Time Graph

The slope/line of the graph

The area under the Slope of the Line represents in a Velocity Time Graph

Displacement

representation of constant speed on a Velocity Time Graph?

Straight Parallel Line with 0 Acceleration

non-contact force

A force that can act on an object without touching it.

contact force

A force that acts on an object through touching it

Force Field

The invisible area at which a force can act

Gravity

ravity is a Non-Contact force that acts on all objects by attracting them together based on their mass.

What can alter the size of gravitational forces?

Distance between and mass of objects

What is mass?

the amount of matter in an object, measured on a scale in kg, g, tonnes…

What is weight?

gravity pulling on mass and is a force, it is measured with a spring balance and in Newtons

Calculation for Weight

Force(w)= Mass x Gravity

Gravitational Force Formula

Acceleration Formula

Final Velocity - Initial Velocity

\-----------------------------------

Time

Equations of Motion

Final velocity (v) = initial velocity (u) + acceleration (A) x time (t)

\
V^2 = u^2 + 2 x a x displacement (s)

\
s = u x t + 1/2 x a x t^2

force

A push, pull or twist that either increase/decrease the speed, Change direction or change the shape of an object.

Newton’s First Law of Motion

Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

inertia

A property of matter by which it remains at rest or in unchanging motion unless acted on by some external force. \`

Newton’s Second Law of Motion

An object will accelerate if an unbalanced force is applied to it

Newton’s Third Law

For every force there is a force of the same size acting in the opposite direction.

For every action there is an equal and opposite reaction

Formula for Weight

Mass x Gravity

field

A region in space where an object would experience a force

work

The product created when a force is applied to an object in order to move or change the object.

energy

The ability to do work.

formula for work

Force x Distance

2 forms of Energy

Kinetic and Potential

kinetic energy

The energy found within an object because of tis mass and its velocity.

formula for Kinetic Energy

1/2 x mass x velocity^2

Gravitational Potential Energy?

The energy an object has because of its mass and its position in a gravitational field.

formula for Gravitational Potential Energy

Mass(kg) x Gravity(ms^-2) x height (m)