Science speed and forces revision Flashcards
What is gravity measured in?
Newtons (N)
What is upthrust?
A force pushing upwards on an object in liquid
What are the three forces?
Push, pull and twist
What is thrust?
A push caused by an engine?
How do you calculate speed?
Distance divided by time.
What is the difference between mass and weight?
Weight is a force and mass is a measurement.
What is the difference between mass and weight?
Weight is a force and mass is a measurement.
What is air resistance/drag?
The force on an object moving through the air that causes it to slow down.
What is friction?
The force that resists movement because of contact between surfaces.
What is mass?
The amount of matter that something is made up of.
What is weight?
The force of the earth on an object due to its mass.
What is density?
The amount of mass that there is in an area.
Force(s) acting on an object that are the same size but act in opposite directions is called…
Balanced.
The motion of an object can be described by this…
Distance-time graph.
Lift is…
A force pushing upwards on an object flying through the air.
