The cart moves at a speed of 3m / s. Its kinetic energy is 27J. What is the weight of the cart?

To find the mass of the cart under consideration, we will use the formula: Ek = m * V ^ 2/2, whence we express: m = 2 * Ek / V ^ 2.

Values of variables: Ek – kinetic energy of the cart (Ek = 27 J); V – speed of movement (V = 3 m / s).

Let’s calculate: m = 2 * Ek / V ^ 2 = 2 * 27/32 = 6 kg.

Answer: The cart under consideration must have a mass of 6 kg.

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