Kinematics
What does the area under a velocity-time graph represent?
Displacement
State Newton’s First Law.
An object will remain at rest or move at constant velocity unless acted on by a net external force.
What type of wave is sound?
Longitudinal
Q/E=mc(delta)t
What does the gradient of a displacement-time graph represent?
Velocity
A car travels 20 m in 4 s. What is its average speed?
5 m/s
A 4 kg object is accelerated at 3 m/s². What is the net force?
12 N
State the wave equation.
v=fλ
Define the law of conservation of energy.
Energy cannot be created or destroyed, only transformed or transferred.
What instrument would you use to measure small masses accurately?
Electronic balance
Define instantaneous velocity.
The velocity of an object at a specific moment in time.
What is inertia?
The tendency of an object to resist changes in motion.
Describe what happens during constructive interference.
Two waves add together to form a wave with larger amplitude.
Convert 500 J of energy to kilojoules.
0.5 kJ
How can you reduce random error in a pendulum experiment?
Take multiple trials and average the results
A ball is thrown vertically upwards at 10 m/s. How long until it reaches the top? (g = 9.8 m/s²)
~1.02 s
Describe the difference between mass and weight.
Mass is the amount of matter; weight is the force due to gravity (W = mg).
What happens to the wavelength when a wave moves from deep to shallow water?
The wavelength decreases.
What is the term used to explain the energy needed to change the state of a chemical.
Latent heat
Line of best fit.
A velocity time graph shows a constant gradient with its velocity starting at -3 m/s and ending at 3 m/s. If this journey took 6 seconds, explain its motion. (direction and speed)
The car is moving in the negative direction and constantly accelerates at 1 m/s2 until coming to a complete stop at 3 seconds. It then turns around and continues to accelerate at 1 m/s2 for another 3 seconds
Explain how Newton’s Third Law applies to a rocket launch.
The rocket pushes exhaust gases down (action), and the gases push the rocket up (reaction).
What were the four phenomena of light that we learnt about.
Diffraction
Dispersion
Reflection
Refraction
Explain the difference between heat conduction and radiation.
Conduction occurs when objects come in contact and particles collide with each other.
Radiation refers to heat energy being transferred as EM waves.
Specific heat capacity.