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Today, 07:00

A ping pong ball has a mass of about 2.45 grams. Suppose that Forrest Gump hits the ball across the table with a speed of about 4.00 m/s. What is the ball's KE?

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  1. Today, 07:30
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    0.0196 Joules

    Explanation:

    Kinetic energy is half the product of mass and velocity squared.

    K. E=0.5 m*v^2; The m is the mass in kilograms and v is the velocity in meters per second.

    We will convert grams to kilograms:

    2.45 grams = 0.00245 kilograms.

    Calculating kinetic energy:

    mass:0.00245 kg

    velocity:4 m/s

    K. E = 0.5 * 0.00245*4^2 = 0.0196 Joules.
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