Forces And Motion Flashcards
Formula for average speed
Average speed= distance/time
What is speed measured in?
Meters per second(m/s)
What is the difference between average speed and instantaneous speed
Average speed: the speed of something throughout the journey
Instantaneous speed: the speed of something at a certain moment.
What’s the difference between speed and velocity
Speed of an object is just a magnitude/size
Velocity has a magnitude/six and a
direction
What is the formula for acceleration and what is it measured in
Acceleration: change in velocity/time
M/S^2
What are forces measured in
Newton’s (n)
Difference between weight and mass
Weight: is a force, is earths gravitational pull on the object. Changes on other planets
Mass: never changes is to do with the genetic makeup, doesn’t change on other planets
What is earths gravitational pull
10N/KG
What’s the formula to calculate the spring constant k of a a spring
F=ke
What happens I forces are balanced
The object remains at rest or movin at a constant speed
What causes friction
When Two surface are in contact with one another
What does friction result in
Objects to stop moving or slow down
Unwanted friction causes
Unwanted heat energy
Where is drag prominent
Gas or a liquid
What force causes u to slow down in air or water
Drag
