Please i’m begging literally anyone to help me with this. it was due 30 minutes ago a roller coaster travels 6 meters in 3 seconds what is thr kinetic energy of the coaster if its 250 kg

a. 14700 J
b. 4500 J
c. 750 J
d. 500 J

500

Equation used:

(1/2 * 250kg) * 2 m/s^2

Hope i'm right

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form