Answer :
Final answer:
The 3 kg ball is moving at approximately 17.03 m/s.
Explanation:
To find the speed of the 3 kg ball, we can use the equation:
Kinetic energy (KE) = 0.5 * mass * speed2
Given that the ball has a kinetic energy of 145 J and a mass of 3 kg, we can rearrange the equation to solve for speed:
Speed = √(2 * KE) / mass
Plugging in the values:
Speed = √(2 * 145 J) / 3 kg
Speed = √(290 J) / 3 kg = √(290) / 3 m/s = 17.03 m/s
Therefore, the ball is moving at approximately 17.03 m/s.
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