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    A car rounds a bend at 10m/s, and then accelerates at 0.5m/s^2 along a straight fetch of road. There is a T-junction 400m from the bend. When the car is 100m from the junction with a constant deceleration . Find a) how fast the car is moving when the brakes are applied, and b) the deceleration needed for the car to be able to stop at the junction.
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    (Original post by Kamila_Kamizaki)
    A car rounds a bend at 10m/s, and then accelerates at 0.5m/s^2 along a straight fetch of road. There is a T-junction 400m from the bend. When the car is 100m from the junction with a constant deceleration . Find a) how fast the car is moving when the brakes are applied, and b) the deceleration needed for the car to be able to stop at the junction.
    What have you tried?
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    S =
    U =
    V =
    A =
    T =

    Write the above, fill in the gaps and then figure out the equation to use.
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    (Original post by Kevin De Bruyne)
    What have you tried?
    v^2=u^2+2as
    v=sqrt(100+2*0.5*300)
    v=20m/s

    v^2=u^2+2as
    (v^2-u^2)/2s=a
    (0-400)/2*100=a
    a=-2m/s^2
 
 
 
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