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
Maksim231197 [3]
3 years ago
8

How fast should a girl of 35 kg run so that her kinetic energy becomes 700J of?

Physics
2 answers:
Kipish [7]3 years ago
6 0
V^2 = 700J/0.5*35kg

V = square root of 40

v = 6.324 m/s
Alenkinab [10]3 years ago
6 0

Answer:

√40m/sec

Explanation:

As we know Kinetic energy = 1/2 mv^2

700 = 1/2 x 35 x v^2

1400/35 = v^2

√40 = v

So v, √40m/sec

Hope this helps you.

You might be interested in
How do I find the impulse here?
quester [9]
Impulse equals to the force into the actual time period of the applied force . thus the force here given is 245.300 N and time is 0.05 thus the impulse is 12.265 Ns
3 0
4 years ago
Read 2 more answers
An inner city revitalization zone is a rectangle that is twice as long as it is wide. The width of the region is growing at a ra
lukranit [14]

Answer:

\frac{dA}{dt} = 28800 \ m^2/year

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Geometry</u>

  • Area of a Rectangle: A = lw

<u>Algebra I</u>

  • Exponential Property: w^n \cdot w^m = w^{n + m}

<u>Calculus</u>

Derivatives

Differentiating with respect to time

Basic Power Rule:

  • f(x) = cxⁿ
  • f’(x) = c·nxⁿ⁻¹

Explanation:

<u>Step 1: Define</u>

Area is A = lw

2w = l

w = 300 m

\frac{dw}{dt} = 24 \ m/year

<u>Step 2: Rewrite Equation</u>

  1. Substitute in <em>l</em>:                    A = (2w)w
  2. Multiply:                              A = 2w²

<u>Step 3: Differentiate</u>

<em>Differentiate the new area formula with respect to time.</em>

  1. Differentiate [Basic Power Rule]:                                                                   \frac{dA}{dt} = 2 \cdot 2w^{2-1}\frac{dw}{dt}
  2. Simplify:                                                                                                           \frac{dA}{dt} = 4w\frac{dw}{dt}

<u>Step 4: Find Rate</u>

<em>Use defined variables</em>

  1. Substitute:                    \frac{dA}{dt} = 4(300 \ m)(24 \ m/year)
  2. Multiply:                        \frac{dA}{dt} = (1200 \ m)(24 \ m/year)
  3. Multiply:                        \frac{dA}{dt} = 28800 \ m^2/year
3 0
3 years ago
Read 2 more answers
The droplets on a glass of ice water are a result of water vapor releasing energy and changing to water droplets.
olya-2409 [2.1K]

Answer:

B. condensation

Explanation:

hope this helps

4 0
3 years ago
Read 2 more answers
Which statement best describes the movement of atoms in a solid?
Ratling [72]
Atoms and molecules<span> in liquids and gases are bouncing and floating around, free to move where they want. The </span>molecules<span> in a solid are stuck in a specific </span>structure<span> or arrangement of atoms. The atoms still vibrate and the </span>electrons<span> fly around in their </span>orbitals<span>, but the entire atom will not change its </span>position<span>.</span>
3 0
3 years ago
Read 2 more answers
A car is moving at a initial velocity of 20 meters per second accelerates at a rate of 1.5 meters per second squared for 4 secon
Brrunno [24]
Answered using calculus.
Antidifferentiated the acceleration to get velocity. Added variable c as we do not know if there was an extra number there yet.
Knowing that when time is 0, the velocity is 20, we can substitute those numbers into the equation and find that c = 20.
Now we have full velocity equation: v = 1.5t + 20
Now we substitute 4 into t to find out the velocity after 4 seconds. This gives us the final answer of 26m/s

5 0
4 years ago
Other questions:
  • Explain the relationships between gravity, mass, and distance.
    12·2 answers
  • Electromagnetic Induction states that moving a magnet through a loop of wire creates which of the following?
    5·1 answer
  • Explain why radiation is dangerous to humans
    8·2 answers
  • If there was a natural disaster and the people that were in this disaster were supposed to be there. There were 3 people in the
    13·1 answer
  • In the recent Olympics, many records were broken and history was re-written.
    15·1 answer
  • A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length r. If I₁ is the mo
    10·1 answer
  • A uniform steel plate has an area of 0.819 m2. When subjected to a temperature difference between its sides, a heat current* of
    5·1 answer
  • A white blood cell has a diameter of approximately 12 micrometers or 0.012 um a model represents its diameter as 24 um what rati
    13·1 answer
  • Photosynthesis is an example of an endothermic reaction. Which statement is true about photosynthesis?
    12·2 answers
  • A 3.0 kg block is pushed 1.0 m at a constant
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!