Question

a car travels at a speed of 10km/h on a hilly road after crossing the hilly road the car travels at a straight road with speed 90 km/h.the car gains the speed in 50 sec, calculate the acceleration

Answer 1

Dear student,
$Acceleration=\frac{Changeinvelocity}{time}=\frac{(90-10)\times {\displaystyle \frac{5}{18}m/s}}{50}=\frac{22.5}{50}=0.45m/s^2$

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