Physics First semester Final Review

Total Flash Cards » 33
 
1. 

Area of physics that studies motion and its causes.

 

Mechanics

 
2. 

According to the scientific method, how should conclusions be stated?

 

in a form that can be evaluated by others

 
3. 

SI unit to measure mass

 

gram

 
4. 

Poor precision in scientific measurement may arise from?

 

humman error

 
5. 

A baker making a loaf of bread deals with which area of physics

 

thermodynamics

 
6. 

According to the scientific method, why do physicist make observations and collect data?

 

to ask a question

 
7. 

Delta means

 

difference or change

 
8. 

SI unit for time

 

second

 
9. 

mm represents

 

millimeter

 
10. 

area of physics that studies heat and temperature

 

thermodynamics

 
11. 

listening to your favorite radio station involves which area of physics

 

vibrations and wave phenomena

 
12. 

A hiker uses a compass to navigate through the woods. Identify the area of physics that this involves

 

electromagnetism

 
13. 

According to the scientific method, how does a physicist formulate and objectively test hypotheses?

 

by experiments

 
14. 

The most appropriate SI unit for measuring the length of an automobile is the

 

meter

 
15. 

If some measurements agree closely with each other but differ widely from the actual value, these measurements are

 

precise but not accurate

 
16. 

The Greek letter delta, D, indicates a(n)

 

difference or change

 
17. 

The Greek letter sigma, S, indicates a(n

 

sum

 
18. 

What is the symbol for a time interval?

 

Dt

 
19. 

What is the speed of an object at rest?

 

0.0 m/s

 
20. 

A dolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h? (s = d / t)

 

1.1 km

 
21. 

Acceleration is

 

rate of change of velocity

 
22. 

When velocity is positive and acceleration is negative, what happens to the object’s motion?

 

object slows down

 
23. 

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

 
24. 

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

 
25. 

Which of the following is a value for the acceleration of objects in free fall?

 

–9.81 m/s2

 
26. 

Acceleration due to gravity is also called

 

free fall acceleration

 
27. 

Objects that are falling toward Earth move

 

faster and faster

 
28. 

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

 
29. 

Which would fall with greater acceleration in a vacuum, a leaf or a stone?

 

they accelerate at the same rate

 
30. 

physphysical quantity that has a magnitude but no direction?

 

scalar

 
31. 

physiphysical quantity that has both magnitude and direction?

 

vector

 
32. 

example of a vector quantity?

 

velocity

 
33. 

Which of the following is the motion of objects moving in two dimensions under the influence of gravity?

 

projectile motion