Flashcards
Physics
Flashcards do conjunto (20)
- 1What is the formula to calculate speed?distance travelled
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time taken - 2What is the unit for measuring speed?m/s
- 3What is it called when something or someone is moving at the same speed (a steady speed)?Going at a constant speed.
- 4What does accelerate mean?Speed up
- 5On a graph, if the line is flat, what does it mean?It means that something or someone has stopped moving.
- 6On a graph, if the line is going upwards increasingly steeply, what is it called?Accelerating.
- 7If a car is going over the speed limit, then sees a speed camera in view, what might he/she do?The biker would've slowed down. On a graph it'd look something like a line going up steeply and then curving down a bit as the speed camera comes into view.
- 8What are independent variables?Ones we can change
- 9What are dependant variables?A variable whose value depends on another.
- 10What is correlation?Correlation is a statistical measure that indicates the extent to which two or more variables fluctuate together.
- 11If the independent variable is discrete, what chart should you use?Bar chart
- 12Two cars are going opposite directions, one at 70mph, the other at 60mp. How fast does it look?130mph because you add them together
- 13Two cars are going the same direction, one at 60mph, the other at 20mph. How fast does it look?40mph because you minus the numbers.
- 14What forces act on a plane in the sky?Air resistance, Gravity, Lift and Thrust
- 15What does it mean when all the forces are in balance?It means that each force is perfectly balanced by an equal force in the opposite direction.
- 16What is a gravitational field?A gravitational field is an area in which an object feels a force.
- 17What is weight measured in?Newton's (N)
- 18What is mass measured in?Kilograms (kg)
- 19The force of gravity on you depends on your distance from a planet. The further away you are from the Earth, the weaker the gravitational field strength, so the weaker the force pulling you back. NO ANSWER IT'S A STATEMENTNO ANSWER IT WAS A STATEMENT
Didn't you read what I said on the other side of this card? - 20What is gravity?Gravity is the force keeping us to the ground on earth.
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