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3 December, 09:51

Two froghoppers sitting on the ground aim at the same leaf, located 35 cm above the ground. Froghopper A jumps straight up while froghopper B jumps at a takeoff angle of 58o above the horizontal. Which froghopper experiences the greatest change in kinetic energy from the start of the jump to when it reaches the leaf?

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  1. 3 December, 12:02
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    Frog hopper B❤️recent emojis
  2. 3 December, 13:08
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    change in kinetic energy of both froghopper will be same

    Explanation:

    By work energy theorem we know that

    Work done by all forces = change in kinetic energy

    Here we know that two froghopper are sitting at same height and both jumps with same kinetic energy at different angles

    1) First jump vertically upwards

    2) Second jumps at an angle of 58 degree

    so here while they are in air only gravitational force will work on it

    so work done by gravity = change in kinetic energy

    since both are initially at same height so work done by gravity on both of them will be same

    So change in kinetic energy of both froghopper will be same
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