1. Initial k.e = ½*20*4*4 = 160j Final k.e = 2*160 = 320j Final Velocity = √(2*320)÷20 = √32 m/s = 5.66m/s Ft = m(v-u) t = 20(√32-4)÷5 t = 6.64s

    Initial k.e = ½*20*4*4
    = 160j

    Final k.e = 2*160
    = 320j

    Final Velocity = √(2*320)÷20
    = √32 m/s
    = 5.66m/s

    Ft = m(v-u)

    t = 20(√32-4)÷5
    t = 6.64s

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  2. 1. Area of overlap. 2. Distance of separation. 3. The nature of dielectric material.

    1. Area of overlap.
    2. Distance of separation.
    3. The nature of dielectric material.

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  3. The ball will fall into the open moving car. This is because the constant velocity of the open moving car is equivalent to the velocity with which the projectile moves.

    The ball will fall into the open moving car. This is because the constant velocity of the open moving car is equivalent to the velocity with which the projectile moves.

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