Activity 6. KELCULATEI Directions: Calculate the kinetic energy of an object. Use the formula Ke=mv. Show your solution and box your final answer. 1. What is the kinetic energy of a 100 kg object that is moving with a speed of 12.5 m/s? 2. What is the car's kinetic energy that is traveling a velocity of 40mis and has a mass of 1120 kg?
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1. 7, 812.5 J
2. 896, 000 JExplanation:
KE= 1/2 (100kg)(12.5 m/s)²
=7, 812.5 kg m²/s² or 7, 812.5 J
KE= 1/2 (1120kg)(40m/s)²
= 896, 000 kg m²/s² or 896, 000 J
when ligth strike an opaque object it is either absorb by the object or it is bounced off or reflected by the object.