Acar drives off the edge of a 54 m high cliff with a horizontal velocity
of 45 m/s. what is the amount of time it took for the car to hit the
ground?

the initial   velocity of the car was 145 m/s

  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

force tends to be low and long diustance masses are high