Motion
Calculations
Laws of Motion
Vocab
Miscellaneous
100
What do you call a stationary place you choose to base all your motion on?
reference point
100
How fast are you going if in 10 s you cover 100 m?
10 m/s
100
Which law of motion is this...
An object in motion/at rest will remain that way until acted upon by an unbalanced force.
1st
100
a force that resists motion
friction
100
As distance increases, what happens to gravitational attraction?
It decreases.
200
Name one of the two differences between speed and velocity?
Velocity has a direction or velocity is a displacement from a reference point rather than a total distance traveled.
200
What velocity do you have if you jog 200 meters South in 50 seconds?
4 m/s, S
200
For every action there is an equal and opposite reaction.
3rd
200
an attractive force between two objects with mass
gravity
200
As mass increases, what happens to gravitational attraction?
It increases.
300
How can you have an acceleration without a change in speed?
there is a change in direction
300
How much force is needed to accelerate a 10kg cannonball to 300m/s2?
3000N
300
F=MA
2nd
300
distance covered per unit time
speed
300
If you dropped two similar shaped balls but with different masses from the same height, which will hit first?
Both will hit at the same time.
400
______ is a force that works in opposition of motion. For example, dragging a heavy box.
Friction
400
On average, how fast are you going if you bike 60 m in 4 s?
15 m/s
400
What is the force that keeps someone moving forward when a car suddenly stops?
Inertia
400
displacement per unit time in a set direction
velocity
400
Friction causes what form of energy to form?
heat
500
What is a negative acceleration?
deceleration
500
Can you move a box that has 50N of force AND is experiencing 25N of friction from the ground with 75N of force?
No, the forces are balanced.
500
If the sun's gravity suddenly stopped working, what direction would the earth fly off into space?
A straight line.
500
any change in an object's velocity
acceleration
500
Although two object fall at the same RATE of gravity, what force does eventually slow down their fall?
Air Resistance (friction)