lily asked in Science & MathematicsPhysics · 4 weeks ago

Another question! Please if there is anyone good at physics/ engineering here help me out with this :)? thanks?

A car moving with an initial constant velocity covers a 50 m AB span of a highway in 5.0 s. If its velocity at point A is 15.0 m/s, what is its velocity as it passes point B?

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  • oubaas
    Lv 7
    4 weeks ago

    2*50 = (15+Vb)*5

    100-75= 5Vb

    Vb = 25/5 = 5 m/sec

  • 4 weeks ago

    the average velocity is 50/5 = 10 m/s

    the average velocity is also (A + B) /2 if we can presume a constant acceleration from a to b.

    (15+B)/ 2 = 10

    15+B = 20

    B = 20 - 15 = 5 m/s

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