Atrain passes your stop at 17m/s it slow downs near the next stop, to 2/ms it travels 70 m as it slows down how long did it take to slow down

The required time is 7.3[seconds]

Explanation:

First, we need to find the deceleration for the slow down, we can do this using the following kinematic equation.

The minus sign means that the train is decreasing its velocity.

Now using another kinematic equation, we cand find the time.

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2

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c) both a and b.