AS M1 Maths SUVAT Equations help

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    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.
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    (Original post by loginrunner)
    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.
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    (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.
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    (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.
    Man, you always seem to be on maths threads and give really helpful advice too!
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    What was the answer? want to see if i got it right
 
 
 
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