Question

You throw a ball with a mass of 2.1 kg the ball leaves your hand at 30 m/s the ball has ______ energy calculate it​

Answer 1

Answer:

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You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has. Kinetic _energy. Calculate it. Show your work. KE=/my² = % (2.1kg)(30 m/sec)²= 945J

Answer 2

Answer:

945 J

Explanation:

you have just given the ball kinetic energy, which is given by the follow equation

Ek=0.5 ×m ×v2

so,the energy the ball has the moment after you hit it is

Ek=0.5 ×2.1 ×(30)2

Ek =945J