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Zechariah
Physics
6 April, 09:46
A 950 kg car is initially moving at 95 km/hr
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Kathy Singh
6 April, 09:47
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Mass of the car is 950 kg and therefore the weight of the car is 9500 N.
The initial speed of the car is 95 km/hr
Converting this to m/s
95 * 1000/3600 = 26.39 m/s
To calculate the resultant force after collision we subtract the stopping force from the weight of the of the car.
Resultant force = 9500 N - 3860 N
= 5640 N
Then we can calculate the power,
power = force multiplied by distance then divided by time
this is equivalent to force multiplied by velocity (distance divided by time),
Therefore power = force * velocity
stopping power will therefore be 5640 N * 26.39 m/s = 148839.6 watts
Hence the stopping power is 148839.6 Watts or 148.839 kilo watts
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