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Unit 9/chapter 2
Unit 9/chapter 2 study guide
Question | Answer |
---|---|
If u walk 2 miles from your house and back, what is your a) distance traveled and b) displacement? | A. 4 miles B. 9 miles |
Motion is defined as a change in | Position |
Which if these is a velocity: 5 m/s or 5 m/s north? why? | 5 m/s north because velocity includes direction. |
A single point on a distance-time graph tells you an object's | Instantaneous speed |
Acceleration | Is the rate of change of velocity over time. |
Inertia varies depending on an object's | Mass |
Newton's first law of motion is also called the law of | Inertia |
The distance traveled by an object divided by the time it takes to travel that distance is called | Average speed |
The speed of an object at rest is | Zero |
The difference between speed and velocity is velocity includes | Direction |
The SI unit for acceleration is | M/s 2 |
The combination of all the forces acting on an object is called the | Net force |
If the net force acting on a stationary object is zero, the object will | Remain at rest |
An object is in motion when the object changes | Position in relative to a stationary reference point |
In a car crash | Inertia could cause you to crash into the windshield. |
When an object speeds up, it's acceleration is | Positive; when an object slows down, it's acceleration is negative. |
A= | Acceleration |
Vf= | Final velocity |
Vi= | Initial velocity |
Tf= | Final time |
D= | Distance |
V= | Velocity |
T= | Time |
The faster an object is moving, the | Steeper the slope on a distance-time graph. |