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Stells [14]
3 years ago
5

Lillle is running. She increases her initial speed of 30 km/h to 40 km/h so she

Physics
2 answers:
Alex777 [14]3 years ago
6 0

Answer

200km {h}^{ - 2}

Explanation

Acceleration =  \frac{final \:  \:  \: velocity - initial \:  \: velocity }{time}  \\  =  \frac{(40 - 30)km {h}^{ - 1} }{0.05h}  \\  =  \frac{10}{0.05}  \\  = 200km {h}^{ - 2}

Hope this helps you.

Let me know if you have any other questions :-):-)

Kaylis [27]3 years ago
5 0
  • initial velocity=u=30km/h
  • Final velocity=v=40km/h
  • Time=t=0.05h

\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}

\\ \sf\longmapsto Acceleration=\dfrac{40-30}{0.05}

\\ \sf\longmapsto Acceleration=\dfrac{10}{0.05}

\\ \sf\longmapsto Acceleration=200km/h^2

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professor190 [17]

To develop this problem we will apply the concepts related to the kinematic equations of motion, specifically that of acceleration. Acceleration can be defined as the change of speed in an instant of time, mathematically this is

\vec{a} = \frac{\vec{v_2}-\vec{v_1}}{\Delta t}

If a mobile is decreasing its speed (it is slowing down), then its acceleration is in the opposite direction to the movement. This would imply that the acceleration vector is opposite to the velocity vector.

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Answer:

he fall movement we see that both the force is different from zero, and the torque is different from zero.

When analyzing the statements the d is true

Explanation:

Let's pose the solution of this problem, to be able to analyze the firm affirmations.

When the person is falling, the weight acts on them all the time, initially the rope has no force, but at the moment it begins to lash it exerts a force towards the top that is proportional to the lengthening of the rope.

The equation for this part is

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As the axis of rotation is located at the top where they jump, there is a torque.

What is it

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4 0
3 years ago
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choli [55]

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<em><u>or</u></em>

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Vesnalui [34]

To solve the problem we will simply perform equivalence between both expressions. We will proceed to place your units and develop your internal operations in case there is any. From there we will compare and look at its consistency

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