An automobile with passengers has weight 19.4 kN and is moving at 108 km/h when the driver brakes to a stop. The frictional forc
e on the wheels from the road has a magnitude of 8040 N. Find the stopping distance.
1 answer:
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It results change only in it's kinetic energy, it's KE will increase in accord with the work-energy theorem
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Answer:
80m, assuming g=10m/s^2
Explanation:
40m/s will be reduced to 0m/s in 4 seconds. 4 seconds x 40m/s would be 160m up, but you will only get half of that because you decelerate linearly to 0m/s. This leaves you with 4 x 20 = 80m.
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Answer:
14
Explanation:
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