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------------------------------------------------ A racing car has a mass of 1920 kg. The acceleration due to gravity is 9.8 m/s². What is its kinetic energy if it has a speed of 103 km/h? Answer in units of Joules (J).

The kinetic energy of the racing car with a mass of 1920 kg and speed of 103 km/h is approximately 787,473.472 Joules (J) when calculated using the kinetic energy formula in the physics field.

Explanation:

The kinetic energy of an object can be calculated using the formula Kinetic Energy = 0.5 * mass * velocity². In physics, mass should be measured in kilograms, and velocity should be measured in metres per second.

Given the racing car's mass is 1920 kg and its speed is 103 km/h, we first need to convert the speed from km/h to m/s. This can be done by dividing the speed by 3.6, which gives us a speed of approximately 28.61 m/s.

Substituting these values into the kinetic energy formula, we get: Kinetic Energy = 0.5 * 1920 kg * (28.61 m/s)² which equals approximately 787,473.472 Joules (J).

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