Green Flashcards
Easy topics that i know well
How do you work out distance?
Speed (m/s) x time (m/s)
What is a Distance-time graph?
Tells you about the speed of an object on its journey. The speed is equal to the gradient (slope) of a graph.
What is a vector quantity?
It has a magnitude (size) and direction. E.g. Force
What is a scalar quantity?
It has magnitude (size) but no direction. E.g. time.
What quantities are speed and distance?
Scalar
What quantities are velocity and displacement?
Vector
What is an independent variable?
What you change
What is a dependent variable?
What you measure
What is a control variable?
What stays the same
What equipment is needed for the trolley on a ramp PAG?
Trolley, ramp, timer, books and ruler
What was the outcome for the trolley on a ramp PAG?
As the ramp height increases the acceleration increases and the speed increases.
How do you work out the gradient?
Change in y ÷ change in x
What equipment is needed for the Hooke’s law PAG?
Retort stand, clamp, ruler, spring and mass
What was the outcome of the Hooke’s law PAG?
The gradient of the force against extension graph is equal to the spring constant. The higher the gradient, the higher the spring constant.
How do you work out spring constant?
Weight ÷ extension
