Answered

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A toy car with a mass of 3.1 kg has 60 J of kinetic energy as it drives along the straight part of a racetrack. What is the velocity of the car?

Sagot :

Lanuel

The velocity of a car with a mass of 3.1 kg is equal to 6.22 m/s

Given the following data:

  • Mass of car = 3.1 kg
  • Kinetic energy = 60 Joules

To calculate the velocity of the car:

Mathematically, kinetic energy is calculated by using the formula;

[tex]K.E =\frac{1}{2} MV^2[/tex]

Where:

  • K.E is the kinetic energy.
  • M is the mass of an object.
  • V is the velocity of an object.

Making V the subject of formula, we have:

[tex]V =\sqrt{\frac{2K.E}{M} }[/tex]

Substituting the given parameters into the formula, we have;

[tex]V =\sqrt{\frac{2\times 60}{3.1} }\\\\V=\sqrt{38.71}[/tex]

Velocity, V = 6.22 m/s

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