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Calculate the work required to be done to stop a car of 1500 k... - Science
Question
Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?
Answer
Given:
Mass (m) = 1500\text{ kg}
Velocity (v) = 60\text{ km/h} = 60 \times \frac{5}{18} = \frac{50}{3}\text{ m/s}
Formula:
Work required = Change in Kinetic Energy (Initial K.E. - Final K.E.)
Since final velocity is 0, Work = Initial K.E. = \frac{1}{2} m v^2
Calculation:
W = \frac{1}{2} \times 1500 \times \left(\frac{50}{3}\right)^2W = 750 \times \frac{2500}{9}W = \frac{1875000}{9}W \approx 208333.3\text{ J}
Answer:
The work required is 208333.3\text{ J} (approx).
