2. what is the amplitude and wavelength of the wave shown below?
y (m)
20
401
80
109 1120
140
180
180
x (crn)
200
o a amplitude: 30 cm, wavelength: 60 cm
b amplitude 30 cm, wavelength 110 cm
c amplitude 60 cm, wavelength 60 cm
d. amplitude 60 cm, wavelength 110 cm

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