Formulas
In p=mv, p is:
momentum
Stan Lee drives 80 km to the store, then drives back 20 km. What is his displacement?
60 km
The distance an object travels per unit of time
speed
What is a unit used for speed?
m/s
mi/hr
Draw a distance-time graph that shows an object that is not moving.
it should be a straight line across the graph
In s=d/t, t is:
time
A girl on a bike rides down a hill 500 meters long in 50 seconds. What is her speed?
10 m/s
The product of an objects mass and velocity
momentum
What is a unit used for distance?
m
mi
km
cm
Draw a velocity-time graph that shows an object that is not moving.
it should be a straight line across at the bottom of the graph
What is the displacement formula for finding displacement in a "diagonal" direction?
c=√ a2+b2
A dog ran at a speed of 10 m/s for 20 seconds. How far did it run?
200 m
a motion in which the rate of change in velocity decreases
negative acceleration or deceleration
What unit is used for mass?
kg
g
Draw a distance-time graph of an object that is moving at a consistent speed.
In a=△ v/t, what does △ v mean?
the change in velocity or vf-vi
What is the momentum of a child and wagon if the total mass of the child and wagon is 22kg and the velocity is 1.5m/s?
33 kg m/s
acceleration
What is the unit for momentum?
kg m/s
Draw a velocity-time graph that shows an object moving at a constant speed.
it should be a straight line across the graph
What is the formula for distance? (remember your speed formula to help you on this one!)
d=st
A snake accelerates from 2 m/s to 10 m/s in four seconds. What is the lizard's acceleration?
2 m/s/s
The distance and direction of the object's change in position
displacement
What is the unit for acceleration?
m/s/s or m/s2
Draw a distance-time graph that shows an object speeding up at a fast pace.
it should be a curved line with a positive slope