assessment 2

Cards (17)

what is the formula for speed 
speed=distance divided by time
what is the formula for inertial mass 
force/acceleration
wat is the formula for acceleration 
change in velocity/time taken
what is the formula for resultant force 
mass x acceleration
give 6 examples of scalar quantities 
mass,time,temperature,density,distance,speed
give 5 examples of vector quantities 
velocity, acceleration, weight, force, displacement
what is distance? 
how far an object has moved
what is displacement 
measures distance and direction in a straight line
what is speed 
how fast u are going (e.g 30mph)
what is velocity 
speed in a given direction (e.g 30mph north)
what is acceleration 
change in velocity in a certain amount of time
what is constant acceleration 
acceleration due to gravity
what is newtons first law? 
a resultant (overall) force is needed to make something start moving, speeding up or slowing down
true or false? an object with larger mass will accelerate less then an object with smaller mass 
true
what is inertia? 
a tendency to do nothing or to remain unchanged
what does inertial mass measure? 
how difficult it is to change the velocity of an object
what is newtons third law? 
when two objects interact, the forces that exert on each other are equal but opposite directions