Motion
Change in distance divided by change in time
What is velocity
Forces that are acting on an object in opposite directions and different sizes
What are unbalanced forces
The potential energy of a cat (mass = 4 kg) in a tree at a height of 5 m.
What is 196 J
The area of an atom where most of the mass is concentrated
What is the nucleus
The most concentrated region of iron filings sprinkled around a bar magnet
What are the poles
A kiwi runs 5 meters in 20 seconds. What is its velocity?
What is 0.25 m/s.
The acceleration of an object with a mass of 3.4 kg pushed with a force of 1.7 N
What is 0.5 m/s^2.
A stationary ball has 1.0 J of potential energy at 5m. If it's dropped, how much kinetic energy does it have just above the ground?
What is 1 J
The charge of the paint droplets in electrostatic painting
What is negative
The strength of the magnetic field of a current of 2 amps at a distance of 0.12 m
3.3 x 10^-6
An upward curved line on a distance-time graph.
What is acceleration
Someone knocks a book off the desk. The book has a mass of 2 kg. What is the acceleration of the book towards the ground?
What is 9.8 m/s^2
How much work is done when a bag with a mass of 5 kg is lifted 5 m?
What is 250 J
A simple technique for discharging an object
What is earthing
The purpose of the soft iron core in the middle of a solenoid
What is to increase the magnetic field strength
The slope/gradient of a distance-time graph
What is speed
A frictional force that opposes the motion of an object through a fluid (liquid or gas).
What is drag
The speed of an object with 270 J of kinetic energy and a mass of 60 kg.
What is 3 m/s
The resistance in a circuit of 32 V and a current of 0.2 amps
What is 160 ohms
In a relay switch, the result of the iron armature pivoting after the first switch is closed
What is closing the contacts
An upward sloped line on a distance-time graph would look like what on a velocity-time graph?
What is a straight (horizontal) line
The amount of this is dependent upon the speed of the falling object and the surface area of the falling object
What is air resistance
How much gravitational potential energy does a woman have at the top of a ladder if her mass is 60 kg and she climbs the 3 m high ladder in 6 s.
1800 J
The number of electrons passing through a wire each second in 1.3 A of current
8.11 x 10^18
The strength of the magnetic field between two vertical wires with the current moving in opposite directions
What is large / strong