Acar moves at a speed of 50 kilometers/hour. its kinetic energy is 400 joules. if the same car moves at a speed of 100 kilometers/hour, then its kinetic energy will be 800 1,600 3,200 4,500 joules.

If the same car moves at a speed of 100 kilometers/hour, its new kinetic energy will be 1600 Joules.

Explanation:

Kinetic energy is defined as energy of a body due to its motion.

Where:

v = Velocity of the body in m/s.

m = Mass of the body

Given:

v = 50 km/h=

1 km = 1000 m

1 hour = 3600 seconds

Kinetic energy of the body,K.E = 400 Joules

Mass of the body = ?

If the same car moves at a speed of 100 kilometers/hour, then its kinetic energy will be K.E'

New velocity of the car = v'=100 km/h =

=

If the same car moves at a speed of 100 kilometers/hour, its new kinetic energy will be 1600 Joules.

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.