|
Area of physics that studies motion and its causes. |
|
Mechanics |
| |
|
According to the scientific method, how should conclusions be stated? |
|
in a form that can be evaluated by others |
| |
|
SI unit to measure mass |
|
gram |
| |
|
Poor precision in scientific measurement may arise from? |
|
humman error |
| |
|
A baker making a loaf of bread deals with which area of physics |
|
thermodynamics |
| |
|
According to the scientific method, why do physicist make observations and collect data? |
|
to ask a question |
| |
|
Delta means |
|
difference or change |
| |
|
SI unit for time |
|
second |
| |
|
mm represents |
|
millimeter |
| |
|
area of physics that studies heat and temperature |
|
thermodynamics |
| |
|
listening to your favorite radio station involves which area of physics |
|
vibrations and wave phenomena |
| |
|
A hiker uses a compass to navigate through the woods. Identify the area of physics that this involves |
|
electromagnetism |
| |
|
According to the scientific method, how does a physicist formulate and objectively test hypotheses? |
|
by experiments |
| |
|
The most appropriate SI unit for measuring the length of an automobile is the |
|
meter |
| |
|
If some measurements agree closely with each other but differ widely from the actual value, these measurements are |
|
precise but not accurate |
| |
|
The Greek letter delta, D, indicates a(n) |
|
difference or change |
| |
|
The Greek letter sigma, S, indicates a(n |
|
sum |
| |
|
What is the symbol for a time interval? |
|
Dt |
| |
|
What is the speed of an object at rest? |
|
0.0 m/s |
| |
|
A dolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h? (s = d / t) |
|
1.1 km |
| |
|
Acceleration is |
|
rate of change of velocity |
| |
|
When velocity is positive and acceleration is negative, what happens to the object’s motion? |
|
object slows down |
| |
|
A toy car is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s2. What is the final velocity after 6.0 s? |
|
17 m/s |
| |
|
A soccer ball is kicked horizontally. What is its average speed if its displacement is 21.0 m after 4.00 s? (s = d/t) |
|
5.25 m/s |
| |
|
Which of the following is a value for the acceleration of objects in free fall? |
|
–9.81 m/s2 |
| |
|
Acceleration due to gravity is also called |
|
free fall acceleration |
| |
|
Objects that are falling toward Earth move |
|
faster and faster |
| |
|
Which would hit the ground first if dropped from the same height in a vacuum, a feather or a metal bolt? |
|
they would hit the ground at the same time |
| |
|
Which would fall with greater acceleration in a vacuum, a leaf or a stone? |
|
they accelerate at the same rate |
| |
|
physphysical quantity that has a magnitude but no direction? |
|
scalar |
| |
|
physiphysical quantity that has both magnitude and direction? |
|
vector |
| |
|
example of a vector quantity? |
|
velocity |
| |
|
Which of the following is the motion of objects moving in two dimensions under the influence of gravity? |
|
projectile motion |
| |
