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schepotkina [342]
3 years ago
13

Assume that a vaulter is able to carry a vaulting pole while running as fast as Carl Lewis in his world record 100-m dash (aroun

d 12 m/s). Also assume that all of the vaulter’s kinetic energy is transformed into gravitational potential energy. What vaulting height could that person attain?
Physics
1 answer:
xeze [42]3 years ago
7 0

Answer:

hello

Explanation:

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Derive equation of motion s=ut+1/2at²​
Pavel [41]

Recall the definitions of

• average velocity:

v[ave] = ∆x/∆t = (x[final] - x[initial])/t

Take the initial position to be the origin, so x[initial] = 0, and we simply write x[final] = s. So

v[ave] = s/t

• average acceleration:

a[ave] = ∆v/∆t = (v[final] - v[initial])/t

Assume acceleration is constant (a[ave] = a). Let v[initial] = u and v[final] = v, so that

a = (v - u)/t

Under constant acceleration, the average velocity is also given by

v[ave] = (v[final] + v[initial])/2 = (v + u)/2

Then

v[ave] = s/t = (v + u)/2   ⇒   s = (v + u) t/2

and

a = (v - u)/t   ⇒   v = u + at

so that

s = ((u + at) + u) t/2

s = (2u + at) t/2

s = ut + 1/2 at²

4 0
2 years ago
Surface ocean currents are driven primarily by ________ and modified by ________
djverab [1.8K]
By Wind
By the Coriolis effect and land
Hope it helped
4 0
3 years ago
What happens to the temperature and thermal energy of water when it is heated in a pot on the stove?
Gekata [30.6K]

Answer:

Both its temperature and its thermal energy will increase.

Explanation:

Objects are made up of particles. For example, water is made up of water molecules. The kinetic energy of a particle of mass m and velocity v is equal to \displaystyle \frac{1}{2}\, m \cdot v^2,  

  • The thermal energy of an object measures the total kinetic energy of all its particles.
  • On the other hand, the temperature of that object measures the average kinetic energy of all these particles.

Water in that pot gains energy when the pot is heated. That would increase the total kinetic energy of these water molecules.

What about temperature? Assume that the number of water particles in the pot stays the same- In other words, assume that water in the pot does not evaporate. As the total kinetic energy of these water molecules increase, their average kinetic energy would also increase. As a result, it would appear that the temperature of water in that pot has increased.

7 0
4 years ago
A soccer player is running at a constant speed of 1.8 m/s when she speeds up in the same direction with an acceleration of 0.50
lawyer [7]

Answer:

3.6 m/s

Explanation:

v² = v₀² + 2a(x - x₀)

v² = (1.8 m/s)² + 2 (0.50 m/s²) (10.0 m)

v = 3.6 m/s

3 0
4 years ago
Read 2 more answers
if a toaster transfers 100 joules of energy every ten seconds, what is the power rating of the toaster include the units in your
Mila [183]

Answer:

that is the solution to the question

8 0
4 years ago
Read 2 more answers
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