Motion & Laws of Motion
Motion Calculations
Energy
Vocabulary
Random
100
Newton's 1st Law of Motion is also known as
Law of Inertia
100
Find the speed if in 10s, you cover 100 m. State correct units.
10 m/s
100
The unit for energy (name and symbol)
Joules (J)
100
A force that resists motion
Friction
100
The acceleration due to gravity is a constant value of ______.
9.8m/s/s
200
State a difference between speed and velocity.
Velocity has a direction, speed does not.
Velocity is a vector, speed is a scalar.
E.g. 20m/s East vs 20m/s
200
Calculate the velocity you have if you jog 200m South in 50 seconds? State correct units.
4 m/s, S
200
The formula for kinetic energy is...
KE = 1/2mv2
200
Distance covered per unit of time
Speed
200
As speed increases, what happens to kinetic energy?
It increases.
300
Newton's 3rd Law states that for every action, there is...
an equal and opposite reaction.
300
You accelerate your bike from 2 m/s to 6 m/s in 2s. What is your acceleration? State correct units.
2 m/s/s
300
Energy is neither created nor destroyed. It is simply...
Transferred between objects or transformed into different types of energy.
300
Displacement per unit of time in a set direction
velocity
300
Ms Ridzuan has 120kg on the bar. Calculate the force needed to successfully complete 1 squat. Don't forget your units!
1176N
400
How can you have an acceleration without a change in speed?
Change in direction
400
On average, what is your speed if you bike 60m in 4s? State correct units.
15 m/s
400
When at the top of the track, a cart has _____ energy. As it travels to the bottom of the track, it has _____ energy.
potential, kinetic
400
Any change in an object's velocity
acceleration
400
Look at this distance time graph. What is the person doing from 5s to 10s?
They are stationary/not moving/still.
500
Seatbelts in a car helps stop sudden deceleration during a car crash. Which Newton's Law does this relate to?
Newton's First Law (Law of Inertia)
500
You are driving to Margaret River when a kangaroo runs across the road. You apply the brakes of your car for 2s to stop the vehicle. You were going 30m/s. What was your rate of braking? State correct units.
-15 m/s/s
500
A 5kg puppy chasing a ball has 250J of kinetic energy. What is its velocity? State correct units.
10m/s
500
Energy stored due to an object's position
Gravitational potential energy (GPE)
500
At section A to B, describe the bus' movement.
It is moving at a constant speed (10m/s).