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Midterms > Physics > Flashcards

Physics Flashcards

1
Q

Which is not necessarily true about similar triangles

A

Their corresponding sides are congruent

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2
Q

Which is true about similar triangles

A

Corresponding sides are proportional

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3
Q

A hiker backpacks to a waterfall that is 1000 m east and 1500 m north of his starting position. What is the magnitude of his displacement

A

1800m

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4
Q

What is the approximate Cartesian angle of a vector whose component vectors are +6.50m vertically and +9.60m of his displacement

A

146 degrees

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5
Q

If the length of one leg of a right triangle is 4.7 and the length of the hypotenuse is 5.2, what is the length of the other leg

A

2.2

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6
Q

Resolve the vector L into components Lx and Ly if the length of vector L is 16.0m and the angle it makes with the horizontal is 25 degrees

A

Lx= 14.5m, Ly= 6.76m

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7
Q

If a vectors reference angle is 10 degrees and the vector angle is 190 degree, which quadrant does the vector lie in

A

III

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8
Q

Which of the following is a vector

A

F

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9
Q

Which of the following is always positive

A

Magnitude

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10
Q

Which of the following map directions is equivalent to the Cartesian 180 degree

A

360 T

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11
Q

Which is another way to write 0degree

A

090T

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12
Q

A hiker backpacks to a waterfall that is 1500m east and 2000 m north of his starting position. What is the magnitude of his displacement? Use an order-of-magnitude estimation to choose the correct answer

A

2500 m

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13
Q

Resolve the vector L into components Lx and Ly if the length of vector L is 15.0 m and it’s reference angle is 20 degrees

A

Lx=+14.1m, Ly= +5.13m

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14
Q

Map directions are measured from ______.

A

Clockwise from North.

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15
Q

Triangles containing a 90 degree angle are called

A

Right triangles

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16
Q

Vectors can be multiplied by

A

Scales

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17
Q

The sum of the angles is any triangle is equal to 360 degree

A

False

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18
Q

What is Sin 0

A

Hypotenuse

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19
Q

STUDDYYYYYYYYYYYYYY CHAPTER 4 packettttttt with the anglessss

A

!!!!!!!!!!

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20
Q

Displacement is the total distance an object has traveled

A

False

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21
Q

________ can be a positive or negative quantity

A

Acceleration

22
Q

There is no difference between speed and velocity

A

False

23
Q

Scalar quantities contains 2 types of information

A

False

24
Q

The Greek letter ____ means change in

A

Delta

25
Q

The study of motion is called

A

Mechanics

26
Q

Which branch of mechanics describe how objects move

A

Kinematics

27
Q

Which branch of mechanics explain the causes of motion

A

Dynamics

28
Q

What is the change in position(in a straight line. )between 2 distinct points

A

Displacement

29
Q

Which quantity provides only one piece of information only speed for example

A

Scalar

30
Q

Which is the formula for velocity

A

_. D

V= delta t

31
Q

Which is the formula for acceleration.

A
  • _

A=V

32
Q

What is the gravitational acceleration on Esther’s surface

A

-9.81 m/s2

33
Q

Wha does delta t stand for

A

Change in time

34
Q

You throw a ball for your dog Procyon to fetch. Pro runs from right next to you to the hall lying 22 m away and brings it directly back to you. The round trip takes 11s you pat his head and give a Him a treat.
A. What was the net change in pros psotion overall?
B. What was the total distance covered by the dog?
C. What was the dogs average speed

A

A.0
B. 22+22=44m
C. 4 m/s

35
Q

A ball is dropped from an 80.0 m building. What is the balls velocity after 3.00s?

A

29.43m/s

36
Q

The universe consist of three principles earth wind and fire

A

False

37
Q

The____system is also called the SI

A

Metric

38
Q

The pound is the metric unit of measurement for mass

A

False

39
Q

Accuracy and Percision are the same thing

A

False

40
Q

We can calculate the error in a measurement by finding the_______

A

Percent error

41
Q

Anything that has mass and takes up space is

A

Matter

42
Q

The object that we use to find measurements called

A

Instruments

43
Q

Set a valuation of how close a measurement is to the actual value is

A

Accuracy

44
Q

How exactly in measurement can be made is called

A

Percision

45
Q

Measurements consist of officer and digits and one estimated digit called the

A

Significant digit

46
Q

What is the S I unit of measurement for time

A

Second

47
Q

What is the S I unit of measurement for mass

A

Kilogram

48
Q

When trying to solve a problem what is the first thing you do

A

Understand the problem

49
Q

What are the three principal dimensions

A

Space time and matter

50
Q

What country develop the metric system

A

France

Midterms (6 decks)

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