Motion
The SI Unit of Velocity
What is m/s or ms-1?
The SI Unit of force
What is Newton (N)?
The SI unit of energy
What is a Joule?
This is represented by the gradient of a velocity-time graph
What is acceleration?
What is the wavelength?
The average speed of an object that travels 120m in 6s
what is 20m/s?
The equation relating net force, mass, and acceleration
What is F=ma?
The equation for kinetic energy
What is Ek=1/2 mv2?
This is represented by the area under a velocity-time graph
What is displacement?
The SI unit for frequency
What is Hertz (Hz)?
Represented by the gradient of a displacement-time grape
What is velocity?
The acceleration experienced by a 5kg object with a net force of 20N to the west
What is 4m/s/s West
This happens to KE when velocity doubles
What is 'it quadruples'?
A velocity-time graph with constant positive gradient describes an object with this type of motion
What is constant acceleration?
A wave has a frequency of 5Hz, what does this mean?
5 cycles per second
The final velocity of an object that starts from rest and accelerates at 3.0m/s for 5.0s
What is 15m/s?
The net force acting on an object moving with constant velocity
What is 0N?
The KE of a 2kg object, travelling at 6m/s
What is 36J?
A student measures acceleration five times and obtains: 2.1, 2.3, 2.2, 2.2, 2.2 m/s/s. What is the average and the uncertainty for this value?
2.2 +/- 0.1 m/s/s
The speed of a wave with a frequency of 4Hz and wavelength of 2.5m
What is 10m/s?
The displacement undergone by an object that has initial velocity of 4m/s and accelerates at 2m/s/s.
What is 60m?
A 2kg object is pulled horizontally by 15N while friction of 5N acts in the opposite direction experiences this much acceleration.
This is how much energy needs to be dissipated to bring a 1000kg car travelling at 20m/s to rest
What is 200000J?
Two students obtain experimental values for g of 9.2m/s/s and 10.1 m/s/s. Which result has the better accuracy?
10.1 m/s/s - smaller percentage error from 9.8
The wavelength of a wave travelling at 340m/s with a frequency of 680Hz
What is 0.50m?