Higher Physics Unit 1: "Our Dynamic Universe"

Thank me later

What is the definition of a Vector

Magnitude (size) and Direction

What is the definition of a Scalar

Magnitude only

Give examples of Vectors

Displacement, Velocity, Acceleration, Momentum and Force

Give examples of Scalar's

Mass, Energy, Distance, Speed, Time

_____ equations are used to calculate the horizontal distance

SUVAT

A straight line indicates a _______ velocity

Constant

What does the graph look like for a ball thrown upwards

It is constantly decelerating

What does a positive straight line mean in an acceleration time graph?

It indicates an acceleration.

What does a negative straight line mean in an acceleration time graph?

It indicates a deceleration.

what is the definition of ‘Terminal Velocity’

when the weight and the frictional forces acting on the thing are equal and there is no more acceleration

what is the formula for weight acting ON the slope **THIS ISNT GIVEN IN THE REALTIONSHIP SHEET**

weight acting ON the slope = mgcos(θ)

what is the formula for weight acting PARALLEL of the slope **THIS ISNT GIVEN IN THE REALTIONSHIP SHEET**

PARALLEL weight = mgsin(θ)

What is the equation for horizontal component in a projectile question **THIS ISNT GIVEN IN THE REALTIONSHIP SHEET**

Vh = vcos(θ)

What is the equation for Vertical component in a projectile question **THIS ISNT GIVEN IN THE REALTIONSHIP SHEET**

Vv = vsin(θ)

What are the laws of relativity

1. The laws of Physics is the same for all observers

2. The speed of light is the same for all observers in a vaccum

What is Redshift?

Due to the galaxy moving away from us, the light emitted shifts towards the red end, due to the increase of the wavelength

What is Blueshift

Due to the galaxy moving towards us, the light emitted shifts towards the blue end of the spectrum, due to the decrease of the wavelength

What is Dark Energy?

An unknown form of energy, put forward as a solution to the problem of why the expansion of the Universe is accelerating.

What is Dark Matter?

An unidentified form of matter that accounts for galaxies rotating faster than their visible mass should cause.