How does a car's kinetic energy change when it speeds up from 10 to 20 m/s? a. it quadruples. b. it stays the same. c. it doubles. d. it triples.

It quadruples (a)

Explanation:

Kinetic energy is energy due to virtue of motion of a body. For a body in motion, it must possesses velocity.

Kinetic energy = 1/2MV²

M is mass of the body

V is the velocity

If the initial velocity of the body is 10m/s

K.E = 1/2 ×100M1... 1

K.E = 50M1

For the velocity of the body @ 20m/s

K.E = 1/2 × 400M2...2

K.E = 200M2

Equating the values of both KE in 1 and 2 we have;

50M1 = 200M2

M1 = 4M2

M1/M2 = 4

This shows that the car's kinetic energy quadruples )a)

hypothesising or postulating

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!