Chapter 2.1
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V: change in a objects position relative to a reference point
motion
V: the distance and direction of the objects change of position
displacement
V: the distance an object travels per unit of time
speed
How do you calculate displacement?
distance with a direction relative to your starting point
T/F: Displacement can be calculated in the same direction?
True
T/F: you subtract displacement if they are going in the opposite direction?
True
T/F: you cannot directly calculate displacement if they are not the same or in opposite directions?
True
What is the equation for speed?
speed = distance/time
What is the difference between speed and velocity?
velocity has a direction; speed does not
Is it possible to have a constant speed with a change in velocity?
yes
How do you calculate momentum?
p = mv (momentum = mass x velocity)
What are the units for momentum?
kg*m/s direction
What is the unit for mass?
kg
What are the units for velocity?
m/s direction