Share Basic Physics - Chapter Two
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Speed is...
how fast something moves
how fast and in which direction something moves
the direction something moves
What does velocity include that speed does not?
distance
time
direction
What is distance?
how far something travels
how fast something travels
the straight-line path from start to finish
What is displacement?
the change in position with direction
the total path traveled
the speed over time
Which word describes a change in speed, direction, or both?
velocity
acceleration
distance
What is momentum?
mass x velocity
distance / time
speed x time
Which object would have the greatest momentum (p = m x v)
a light object moving fast
a light object moving slow
a heavy object moving slow
a heavy object moving fast
Which unit is commonly used for speed?
north
meters
seconds
meters per second
Which example shows a velocity?
5 m
5 s
5 m/s
5 m/s west
Which of these has a displacement of zero?
walking 5 m north
walking 5 m north and then 5 m west
walking 5 m north and then 5 m south
walking 5 m south
An object is accelerating when it...
changes speed or direction
moves at the same speed in a straight line
is not moving
If an object slows down it is...
not accelerating
accelerating
Which would likely have more momentum?
a parked car
a truck going 10 m/s
a bike going 30 m/s
Distance and displacement are the same when...
the object moves in a straight line
the object stops
direction changes
Two horses run at the same speed. Which has more momentum?
the horse with less mass
the horse with more mass
both horses have the same momentum
A runner travels 20 meters in 5 seconds. What is the speed?
4 m/s
