4. A truck has four times the mass of a car and is moving with twice the speed of the car.
If KE, and KE, refer to the kinetic energies of truck and car respectively, it is correct to say
that: (KE = 72 my?)

Relation between kinetic energy of truck and kinetic energy of car is given as

Explanation:

As we know that mass of truck is four times the mass of car

and the speed of truck is double that of speed of car

now we have kinetic energy of the truck is given as

similarly kinetic energy of car is given as

now from above two equations we have

so we have

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​