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27 April, 11:58

What is the impulse that a car with a mass of 6kg experiences when its velocity changes from 23m/s to 6m/s?

What is the impulse that the wall creates when it applies a force of 29N over a period of 7s in a collision?

A ball of clay with a mass of. 1 kg hits the floor and comes to a stop. Just before it hits the floor the velocity was - 5.69m/s. If the collision took. 64 s, how much force is the floor exert on the ball of clay?

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  1. 27 April, 13:23
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    A.

    Impulse is calculated through the equation,

    I = mΔv

    where I is impulse, m is mass and Δv is change is velocity. Substituting the known values,

    I = (6 kg) (23 m/s - 6 m/s)

    I = 102 kg m/s

    Answer: 102 kg m/s

    B.

    Impulse in this item is calculated by multiplying the force by the time.

    I = Force / time = (29 kg m/s²) (7 s) = 203 kg m/s

    Answer: 203 kg m/s

    C.

    To answer this item, we have to multiply the mass and the velocity to get the impulse and divide the answer by the time to get the force.

    F = m (v) / t

    Substituting,

    F = (0.1 kg) (-5.69 m/s) / 0.64 s

    F = - 0.89 N

    Answer: - 0.89 N
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