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# AS M1 Maths SUVAT Equations help

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1. I'm stuck on this question about SUVAT equations, but I don't know how to answer it because I feel like there isn't enough information, Could someone help me answer it?

The question is:

A bus is approaching a tunnel. The driver slows down steadily from a speed of U ms-1 to 20 ms-1 in 15 seconds. The driver maintains this speed for the 25 seconds it takes to drive through the tunnel. After emerging from the tunnel, he accelerates steadily, reaching a speed of U ms-1 in 30 seconds.

Calculate the length of the tunnel.
I'm stuck on this question about SUVAT equations, but I don't know how to answer it because I feel like there isn't enough information, Could someone help me answer it?

The question is:

A bus is approaching a tunnel. The driver slows down steadily from a speed of U ms-1 to 20 ms-1 in 15 seconds. The driver maintains this speed for the 25 seconds it takes to drive through the tunnel. After emerging from the tunnel, he accelerates steadily, reaching a speed of U ms-1 in 30 seconds.

Calculate the length of the tunnel.
If anything, there's too much information.

The driver maintains a speed of 20ms-1 for the 15 seconds she's in the tunnel.

The remaining information isn't pertinent.
3. [deleted]
4. (Original post by ghostwalker)
If anything, there's too much information.

The driver maintains a speed of 20ms-1 for the 15 seconds she's in the tunnel.

The remaining information isn't pertinent.
Thank you so much I overcomplicated this way too much.
5. (Original post by ghostwalker)
If anything, there's too much information.

The driver maintains a speed of 20ms-1 for the 15 seconds she's in the tunnel.

The remaining information isn't pertinent.
6. What was the answer? want to see if i got it right

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