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eduard
2 years ago
5

A 57 kg person in a rollercoaster moving through the bottom of a curved track of radius 42.7 m feels a normal force of 995 N. Ho

w fast is the car moving?
Physics
1 answer:
natita [175]2 years ago
5 0

Answer:

Use Fc centripetal force as positive and W the weight as negative

N = m v^2 / R + m g

v^2 = (N - m g) R / m

v^2 = (995 - 57 * 9.8) 42.7 / 57 = 327 m^2/s^2

v = 18.1 m/s

Note: N - m g is the net force producing the centripetal force

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3 years ago
A 1kg box is pushed on a flat surface that is 250m long. The box is initially at rest and then pushed with a constant Net force
sasho [114]

Answer:

C) 50 m/s

Explanation:

With the given information we can calculate the acceleration using the force and mass of the box.

Newton's 2nd Law: F = ma

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  • a = 5 m/s²

List out known variables:

  • v₀ = 0 m/s
  • a = 5 m/s²
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Looking at the constant acceleration kinematic equations, we see that this one contains all four variables:

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Substitute known values into the equation and solve for v.

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The final velocity of the box is C) 50 m/s.

7 0
3 years ago
Give a real-world example of how energy is transformed from electrical energy to thermal energy. Describe how the heat can be tr
timofeeve [1]

Answer:

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3 0
2 years ago
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Jlenok [28]

Answer:

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3 years ago
How much would a 15.0 kg object weigh on Neptune?
yan [13]
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yield, weigh of the object on neptune is 1.13×15=17.04kg
5 0
3 years ago
Read 2 more answers
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