Abody of mass 10kg and initially at rest is subjected to a force of 20n for 1 second. calculate the kinetic energy during that time

20 J

Explanation:

First find the acceleration:

F = ma

20 N = (10 kg) a

a = 2 m/s²

Now find the final velocity:

v = at + v₀

v = (2 m/s²) (1 s) + 0 m/s

v = 2 m/s

Now find the final kinetic energy:

KE = 1/2 mv²

KE = 1/2 (10 kg) (2 m/s)²

KE = 20 J

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.​

i guess it’s a and b