Newton's laws
Every action has an equal and opposite
Reaction
This quantity describes how quickly an object's velocity changes.
Acceleration
What is the formula for Ohm's law?
V = IR
Total energy in a system equals
potential plus kinetic energy
A big white parrot with a yellow thing on its head
Cockatoo
Inertia is defined as
The tendency of an object to resist any change in its state of motion or rest.
When an object starts at rest, what is its inital velocity?
Name one thing that affects the resistance in a conductor.
1. Length of conductor
2. Cross-section of conductor
3. Material of conductor
The unit for energy
Joules
A very clever black coloured bird who recognises the faces of bad people and does mean things to them
What equation best represents Newton's second law?
F = ma
When an object is moving at a constant velocity, what is the value for acceleration?
What is triboelectric charge?
Triboelectric charge is the electric charge that builds up when two different materials come into contact. During this process, electrons are transferred from one material to the other.
As an object gets closer to the ground, the amount of kinetic energy ___________
Increases
A black and white Australian bird who likes to swoop humans during breeding season
Magpie
If gravity on the moon is 1.62m/s2, what is the weight of a 8kg object?
12.96N
A car travelling at 8 m/s accelerates at 3 m/s² for 4 s. What is the final velocity?
20 m/s
Voltage = 10V, resistance = 2500 ohms, what is current?
0.004 A
Mass = 400kg, height = 35m, what is the gravitational potential energy?
137,200 J
A black and white bird known for using tree branches to spike its prey onto before eating it
Butcherbird
A magician quickly pulls a tablecloth out from under a set of dishes, and the dishes remain almost stationary. What is this an example of?
Newton's first law
A skateboarder starts from rest and accelerates at 2.0 m/s² for 6.0 s. What is the displacement?
36m
Two charges are 2 x 10-13 C and -3.5 x 10-11 C. They are separated by a distance of 0.35m. What is the force of attraction between them?
5.14×10−13 N
Velocity = 15m/s, mass = 11 kg. What is kinetic energy?
1237.5 J
What black and white Australian bird feeds its own babies 2-4kg of other birds every year?
Currawong