What is kinetic energy of a 1100 kg car traveling at a speed of 20 m/s?

A 1,000 kg car is traveling at 20 m/s. How much kinetic energy ...www.quora.com › A-1-000-kg-car-is-traveling-at-20-m-s...

Here, Given- mass=1000kg Speed=20m/s Formula for Ek=1/2mv² Putting the value in the formula We get Ek=1/2×1000×20 =10000joules.

Explanation:

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s