A tennis ball is dropped on to the floor from a height of 19.6 m. It rebounds to a height of 4.9 m. If the ball is in contact with the floor
for 0.01 s, what is the average acceleration during the contact? (g =
9.8 m/s2)​

you go to your settings preference and in the end youll see sth that says "i want to delete my acc" click on it and u'll acc will be deleted but u have to wait.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

  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