A car was moving at a speed of 135 km per hour. When brakes were applied, the speed of the car reduced to 43.2 km per hour in five seconds. Find the rate of decline in the speed of the car per second, if the percentage decrease after each second was the same.
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Answer:
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Step-by-step explanation:
32 k/h=8.8889 m/s
22 k/h=6.11111111 m/s
10 k/h=2.777778 m/s
v=u+at
6.11111 m/s=8.888889 m/s + 60a
-2.77777778 m/s=60a
a=-0.0462963 m/s²
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