Aball is dropped from a height of 1.0 m onto a hard concrete floor. it bounces back to a height 0.75 m. find what fraction of its mechanical energy was lost in the bounce.

0.25

0.75

0.0

1.00

the answer is a 3.8cm

explanation:

connect the batteries in series and hope

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is