Question
PRC4A-A1-6 -3-16 What is the kinetic energy (in kJ)of a car, having a mass of 1000 kg and travelling at a velocity of 60km/h square A
Solution
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BertrandMaster · Tutor for 5 years
Answer
Here's how to calculate the kinetic energy of the car:<br /><br />1. **Convert velocity to m/s:**<br /> * 60 km/h * (1000 m/km) * (1 h/3600 s) = 16.67 m/s (approximately)<br /><br />2. **Calculate kinetic energy:**<br /> * Kinetic Energy (KE) = (1/2) * mass * velocity²<br /> * KE = (1/2) * 1000 kg * (16.67 m/s)²<br /> * KE = 139,000 Joules (approximately)<br /><br />3. **Convert Joules to kilojoules:**<br /> * KE = 139,000 Joules * (1 kJ/1000 J) = 139 kJ (approximately)<br /><br />Therefore, the kinetic energy of the car is approximately **139 kJ**.<br />
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