When traveling at top speed, a roller coaster train with a mass of 12,000 kg has a velocity of 30 m/s. The kinetic energy of the train at top speed is J. Given this kinetic energy, what is the tallest hill this roller coaster train can reach the top of? The train can climb a hill that is m high. pls help

Kinetic energy = 5400000 J

Height, h = 45.91 m

Explanation:

Method:

Mass of the roller coaster train, m = 12,000 kg

Velocity of the train, v = 30 m/s

Kinetic energy = 1/2mv^2 (^2 stands for square)

                         = 1/2 x 12000 x 30 ^2

                         = 5400000 J

For height

In general, as,

P.E + K.E = P.E + K.E

0 + 5400000 = mgh + 0

5400000 J = 12000 kg x 9.8 m/s x h

h = 45.91 m

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

what is the actual question though?