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Basic Physics - Chapter Two
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What is the formula for acceleration?
acceleration = (final velocity - initial velocity) / time
What is the formula for momentum?
momentum = mass x velocity
What is the formula for velocity?
velocity = displacement / time
What is the formula for speed?
speed = distance / time
True or False: Heavier objects have more momentum if the speed is the same.
 
true
 
false
True or False: Distance includes direction.
 
false
 
true
True or False: An object can accelerate by only changing directions.
 
true
 
false
True or False: An object can accelerate without changing speed.
 
true
 
false
True or False: An object can accelerate without speeding up.
 
true
 
false
True or False: Velocity needs direction.
 
true
 
false
If mass increases and speed stays the same, the momentum will...
 
increase
 
decrease
 
stay the same
Which of these has more momentum?
 
6 kg at 10 m/s
 
3 kg at 15 m/s
 
8 kg at 5 m/s
A 10 kg cart moves at 3 m/s. What is the momentum?
30 kg x m/s
A 5 kg object moves at 4 m/s. What is the momentum?
20 kg x m/s
A 2 kg ball moves at 3 m/s. What is the momentum?
6 kg x m/s
A ball slows from 8 m/s to 4 m/s in 2 seconds. What is the acceleration?
-2 m/s2
A skateboarder's speed increases from 2 m/s to 6 m/s in 4 seconds. What is the acceleration?
1 m/s2
A car travels 100 meters in 10 seconds. What is the speed?
10 m/s
A bike moves 30 meters in 6 seconds. What is the speed?
5 m/s
A runner travels 20 meters in 5 seconds. What is the speed?
4 m/s
Two horses run at the same speed. Which has more momentum?
 
the horse with more mass
 
the horse with less mass
 
both horses have the same momentum
Distance and displacement are the same when...
 
the object moves in a straight line
 
direction changes
 
the object stops
Which would likely have more momentum?
 
a truck going 10 m/s
 
a bike going 30 m/s
 
a parked car
If an object slows down it is...
 
accelerating
 
not accelerating
An object is accelerating when it...
 
changes speed or direction
 
is not moving
 
moves at the same speed in a straight line
Which of these has a displacement of zero?
 
walking 5 m north and then 5 m south
 
walking 5 m north
 
walking 5 m south
 
walking 5 m north and then 5 m west
Which example shows a velocity?
 
5 m/s west
 
5 m/s
 
5 m
 
5 s
Which unit is commonly used for speed?
 
meters per second
 
meters
 
seconds
 
north
Which object would have the greatest momentum (p = m x v)
 
a heavy object moving fast
 
a light object moving fast
 
a heavy object moving slow
 
a light object moving slow
What is momentum?
 
mass x velocity
 
speed x time
 
distance / time
Which word describes a change in speed, direction, or both?
 
acceleration
 
velocity
 
distance
What is displacement?
 
the change in position with direction
 
the total path traveled
 
the speed over time
What is distance?
 
how far something travels
 
how fast something travels
 
the straight-line path from start to finish
What does velocity include that speed does not?
 
direction
 
distance
 
time
Speed is...
 
how fast something moves
 
the direction something moves
 
how fast and in which direction something moves
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