When the car moves in a straight line at a speed of 10m / s on a straight road, if there is something in front of it and the acceleration is 2m / S2, the speed of the car at the end of 3S after braking is 2m / S2______ &The displacement of the vehicle in 6S is______ m． | Math enthusiast | Mathematical art

When the car moves in a straight line at a speed of 10m / s on a straight road, if there is something in front of it and the acceleration is 2m / S2, the speed of the car at the end of 3S after braking is 2m / S2 &The displacement of the vehicle in 6S is m．

The time t0 = 0 − v0a = − 10 − 2S = 5S for the vehicle braking to zero speed. Then the speed at the end of 3S v = V0 + at = 10-2 × 3m / S = 4m / s, the displacement within 6S is equal to the displacement within 5S, then x = 0 − v022a = − 100 − 4m = 25m

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