Units and Measurement
The SI unit of force
What is a Newton?
The change in position
What is distance or displacement?
The slope of a distance - time graph
What is speed or velocity?
This law states that an object in motion stays in motion
What is Newton's 1st Law?
The center of mass
The device that is used to measure mass
What is a scale or balance?
Change in position divided by time taken
What is speed or velocity
What is distance?
Newton's second law is this equation
What is F = ma
Assuming the density of air is 1.2 kg/m3, then the mass of the air in a room that is 10 x 10 x 10 m3 is this number
The instrument used to measure volume
What is a cylinder?
(or ruler, technically?)
This is the number that you get if you calculate how far a car travels in 15 seconds at a speed of 4 m/s.
What is 60 m?
The slope of a speed - time graph
When something is moving at a constant speed, this is the force on that object
This law of motion says that every force has an equal and opposite reaction force
What is Newton's third law?
The SI unit of distance
What is the meter?
The change in speed / time
What is acceleration?
This is the number you get if you calculate the acceleration of a car that goes from rest to 60 m/s in 5 seconds.
What is 12 m/s2?
When there is zero total force and zero total moments on an object
What is equilibrium?
The amount that a spring stretches is directly proportional to the load
What is the micrometer?
This is the number that you get if you calculate how fast an object is moving after 5 seconds if you drop it from a very tall building.
This number is the acceleration due to gravity
What is 9.8 or 10 m/s2?
This is the number that you get if you calculate the engine force of a 1000kg car accelerating at 0.5 m/s2.
What is 500 N?
This is the period of a pendulum that swings 20 times in 20 seconds.
What is 1 second?