How many times does the kinetic energy of a car increase when traveling 60 mph as opposed to traveling 30 mph? k. e. increases

The answer to the question is 4 times i.e the kinetic energy of the car will increase four times when it will move with 60 mph as opposed to travelling with 30 mph.

CALCULATION:

Let us a consider a body having mass m which is moving with a velocity v.

The kinetic energy of the body is calculated as -

                                 Kinetic energy K.E =

Let us consider the initial and final velocity of the car are denoted as .

Here,

The initial kinetic energy of the car

The final kinetic energy of the car

Hence, the ratio of final kinetic energy to initial kinetic energy is calculated as -

Hence, the kinetic energy of the car will be increased to 4 times when it will move with speed from 30 mph to 60 mph.

So basically the Kinetic Energy increases 4 times

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.