The answer is d, gravity is the only force acting on the object
Answer:
1km = o.621371 mile
Explanation:
1.609 kilometers equal 1 mile. The kilometer is a unit of measurement, as is the mille. However, a mile is longer than a kilometer.
Gravity is all ways pulling down and the normal force acting on top of the object and for it to have to push or pull to the object
Wavelength = (speed) / (frequency) = (460 m/s) / (230/sec) = <em>2 meters</em>