An object with mass 2.4 kg is executing simple harmonic motion, attached to a spring with spring constant 270 N/m . When the object is 0.025 m from its equilibrium position, it is moving with a speed of 0.55 m/s . Part A Calculate the amplitude of the motion.

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s