P2.1 Flashcards
What can you say about the gradient of the line if the car had travelled slower than 25 metres per second?
The gradient of the line would increase.
What does the gradient of the line on a distance-time graph represent?
Represents speed.
What is the equation for speed?
Speed (m/s)=distance travelled (m)/time taken (s)
How would you calculate the average speed? What do you have to do?
Rearrange the formula.
What is velocity?
Speed in a given direction.
Describe the speed of an object moving round in a circle:
It’s going at a constant speed and its direction of motion changes continuously as it goes round so it’s velocity is not constant.
What is the acceleration of an object?
Change of velocity per second.
What is the equation for acceleration?
=change in velocity (m/s2)/time taken for the change (s)
What is the term for when an object slows down?
Deceleration or negative acceleration.
What does the gradient of a line measure?
It’s steepness.
What’s the object doing if the gradient of a line is small?
It’s accelerating.
What is the object doing if the gradient of a line is big?
It’s decelerating.
How would the gradient of the line differ of the celebration had taken longer?
It would’ve been shorter.
What does the area under the line on a velocity-time graph represent?
Represents distance travelled.
What is the equation for the gradient of a line?
=height of the triangle/base of the triangle
