A worker drops a wrench from the top of a tower 95.0 m tall.?

What is the velocity when the wrench

strikes the ground? The acceleration of gravity is 9.81 m/s2. Round to the nearest hundredth place. Answer in units of m/s.

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  • MyRank
    Lv 6
    1 month ago

    Height (h) = 95m

    Velocity (v) = ?

    Acceleration due to gravity (g) = 9.81m/sec²

    Using conservation of Energy:-

    Potential Energy (P.E) = Kinetic Energy (K.E)

    = mgh = ½mv²

    = 2gh = v²

    = velocity (v) = √2gh = √(2 x 9.81 x 95)m²/sec²

    = 43.17m/sec ≈ 43.2m/sec

    ∴ velocity (v) = 43.2m/sec.

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  • Anonymous
    1 month ago

    conservation of energy shall apply :

    m*g*h = m/2*V^2

    mass m cross

    V = √2*g*h = √9.806*95*2 = 43.16 m/sec

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