A ball with a mass of 0.15 kg rolling at 2.7 m/s rolls down into a ditch that is 2.2 m deep. Assuming a complete transformation of energy, what is the ball's velocity at the bottom of the ditch?

6.57 m/s

Explanation:

gravitational potential energy= maximum kinetic energy

mgh= 1/2mv*2

(0.15)(9.8)(2.2)= 1/2(0.15)v*2

3.234= 1/2(0.15)v2

v2= 43.13

v=6.56 m/s

wavelegth as in spectrum red oygbiv

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form