A student conducts an experiment in which a cart is pulled by a variable applied force during a 2 s time interval. In trial 1, the student e

Question

A student conducts an experiment in which a cart is pulled by a variable applied force during a 2 s time interval. In trial 1, the student exerts the force on a cart of mass M. In trial 2, the student exerts the force on a cart of mass 3M. In trial 3, the student exerts the force on a cart of 5M. In which trial will the cart experience the greatest change in momentum from 0 s to 2 s?

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Thiên Di 1 year 2021-09-05T01:32:56+00:00 1 Answers 91 views 0

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    2021-09-05T01:34:06+00:00

    Answer:

    The answer is “Including all three studies of 0s to 2s, that shift in momentum is equal“.

    Explanation:

    Its shift in momentum doesn’t really depend on the magnitude of its cars since the forces or time are similar throughout all vehicles.

    Let’s look at the speed of the car

    [tex]F = m a\\\\a =\frac{F}{m}[/tex]

    We use movies and find lips

    [tex]\to v = v_0 + a t\\\\\to v = v_0 + (\frac{F}{m}) t[/tex]

    The moment is defined by

    [tex]\to p = m v[/tex]

    The moment change

    [tex]\Delta p = m v – m v_0[/tex]

    Let’s replace the speeds in this equation

    [tex]\Delta p = m (v_0 + \frac{F}{m t}) – m v_0\\\\\Delta p = m v_0 + F t – m v_0\\\\\Delta p = F t[/tex]

    They see that shift is not directly proportional to the mass of cars since the force and time were the same across all cars.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )