Question

suppose a cart has a kinetic energy of 0.5 J . If you add enough mass to double the mass and make the cart go three times as fast, it's kinetic energy is now...?​

Answer 1

Explanation:

now it's kinetic energy will be 9J

Answer 2

Answer:

Concept :

Kinetic energy, which may be seen in the movement of an object, particle, or group of particles, is the energy of motion. Any moving item uses kinetic energy, such as a person walking, a baseball being thrown, a piece of food falling from a table, or a charged particle in an electric field.

Explanation:

Given:

K.E. = 0.5 J

Double the mass

Three times faster

To find :

Present K.E.

Solution:

Kinetic Energy is given by,

K.E.=1/2m$v^{2}$

= 1/2 × 0.5 (3)

= 9J

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