Forces And Motion Flashcards
What is the difference between speed and velocity?
Velocity specifies direction as well as speed whereas speed does not
What is the equation for speed?
Speed = Distance / Time
Average speed = Distance moved / Time taken
What does ‘s’ often represent in physics?
Distance
What are speed and velocity measured in?
m/s
What is acceleration measured in?
m/s(squared)
What are the equations for acceleration?
Acceleration = change in velocity / time
v(squared) = u(squared) + 2as
What does a flat line represent on a distance-time graph?
Not moving / stopped
What does an increasing gradient mean on distance-time graph?
Travelling at a constant speed
What do curves represent on distance-time graphs?
Acceleration and deceleration
How to calculate the average speed on a distance-time graph?
Read the graph to find the total distance and the total time, then divide the distance by the time
What does the gradient represent on a velocity-time graph?
Acceleration
What does a flat line mean on a velocity-time graph
Constant speed
How to calculate the distance travelled in a velocity-time graph?
Calculate the area under the graph
Which is a constant value, mass or weight?
Mass
What is mass measured in?
Kg
