March 28, 2017

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A cat chases a mouse across a 1.7 m high
table. The mouse steps out of the way, and
the cat slides off the table and strikes the floor
2.1 m from the edge of the table.
The acceleration of gravity is 9.81 m/s2 .
What was the cat’s speed when it slid off
the table?
Answer in units of m/s.

  • physics - ,

    The time to fall H = 1.7 m, when there is zero initial vertical velocity component, is
    t = sqrt(2H/g) = 0.589 s

    The cat's speed when sliding off is
    Vx = 2.1 m/0.589 s = 3.57 m/s,

    since the cat's horizontal velocity component, Vx, remains constant during the fall.

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