Total distance

Classical Mechanics Level 1

A car accelerates from rest at $1.0 \text{ m/s}^2$ for $20.0$ seconds along a straight road. It then moves at a constant speed for $30 \text{ minutes.}$ It then decelerates uniformly to a stop in $30.0 \text{ s.}$ Find the total distance covered by the car.

43500 m 87000 m 36500 m 73000 m

1 solution

Ivet Kaih
Jul 29, 2014

We can calculate the distance the car go in the first 20 seconds ( when it accelerates at 1 m/s2) : 200m. In the next 30 minutes, the car go straightly at the speed v= a times t. ( a stands for acceleration and t stands for the amount of time) . We got another 36000m. And then we figure out the distance of the last 30s when it decelerates: 300m Sum: 36500m

Total distance

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