1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lara [203]
3 years ago
7

Megan was doing time trials on her bike around a 400m horizontal track. She took 32 seconds to travel 400m. What was her average

speed
Physics
2 answers:
Bumek [7]3 years ago
8 0

Answer:

The answer is Average speed is equal to 12.5 m/sec

Explanation:

1- The average speed is the relationship between the distance traveled that a body made and the total time it took to perform it.

2- The formula that allows to calculate the average velocity is V = ΔX/ΔT where (V) is the average speed, (ΔX) is the distance traveled and (ΔT) is the time interval.

3- Knowing this we can replace the values given in the problem:

V = \frac{400m}{32sec} \\V = 12.5  m/sec

Mars2501 [29]3 years ago
5 0
To find average speed, we divide the distance of travel (in this case, 400 metres) by the time she took, 32 seconds.  Therefore: 12.5 seconds is her average speed.
You might be interested in
Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end
olganol [36]

Answer:

5.25 m

Explanation:

Given;

The height equation h;

h=-x^2+3x+3

Where;

h = the height above water

x = horizontal distance from the end of the board

The maximum height is at h' = 0, when change in h with respect to change in x is equal to zero.

differentiating the equation h.

dh/dx = h' = -2x + 3 = 0

Solving for x;

2x = 3

x = 3/2

Substituting into the function h;

h max = -x^2+3x+3

h max = -(3/2)^2 + 3(3/2) +3 = -9/4 +9/2 +3 = 9/4 + 3 =

h max = 21/4 = 5.25 m

8 0
3 years ago
Whats the kinetic energy of an object that has a mass of 12 kilograms and moves with a velocity of 10 m/s
Vesnalui [34]

Answer:

600J

Explanation:

1/2mv^2

1/2(12)(10^2)

6(100)

600

7 0
3 years ago
According to Newton's law of universal gravitation, which statement is true?
valkas [14]

Answer:

Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.

6 0
3 years ago
Read 2 more answers
Is friction used when buttering a cake pan?
Elena L [17]

Answer: friction is used when 2 and 2 things mix and come together but normally friction slows things down but when buttering a pan it doesnt slow down

7 0
3 years ago
Read 2 more answers
From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. You detect a frequ
V125BC [204]

Answer:

55.8 m/s

Explanation:

f = Actual frequency of sound emitted by car

f' = frequency observed when the car moves = (0.86)f

V = Speed of sound = 343 m/s

v = Speed of car

Frequency observed is given as

f' = \frac{Vf}{V+v}

(0.86) = \frac{(343)}{343 + v}\\(0.86) = \frac{(343)}{343 + v}\\294.98 + (0.86) v = 343 \\v = 55.8 ms^{-1}

6 0
3 years ago
Other questions:
  • A water heater warms 35 l of water from a temperature of 22.7 c to a temperature of 83.7
    10·1 answer
  • How much do you know about the water cycle and the impact that humans have on the water cycle?
    8·1 answer
  • A substance that does not react with metal, has a bitter taste, and turns litmus paper blue is a(n) ___.
    9·1 answer
  • A cell is _______ if it lacks a nucleus and membrane-bound organelles.
    5·2 answers
  • Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below. Potassiu
    12·2 answers
  • A rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Eart
    10·1 answer
  • What is the slope of a line that is perpendicular to a line whose equation is -2y=3x+7
    7·2 answers
  • A wire long and with mass is positioned horizontally near the earth's surface and perpendicular to a horizontal magnetic field o
    10·1 answer
  • A group of big city tenants were upset about rising rent for their apartments, and decided to play a prank on the Building Manag
    11·1 answer
  • All objects on earth, whether moving or stationary, are acted upon by which force?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!