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Explain Bot To find the kinetic energy of a moving object, you need to know its mass and velocity. The formula for kinetic energy (KE) is:
KE = (1/2) * mass * velocity²
In this case, you have a 2 kg ball thrown upward with a velocity of 15 m/s. To find the kinetic energy, substitute the values into the formula:
KE = (1/2) * 2 kg * (15 m/s)²
First, square the velocity:
KE = (1/2) * 2 kg * 225 m²/s²
Next, multiply the mass and velocity squared:
KE = 2 kg * 225 m²/s²
Finally, multiply the result by 1/2:
KE = 450 J
Therefore, the kinetic energy of the 2 kg ball thrown upward with a velocity of 15 m/s is 450 Joules.