Question

A cart has a mass of 35kg and a speed of 1.2m/s. What is its kinetic energy

Answer 1

25.2 J

Step-by-step explanation:

Using the kinetic energy formula:

KE =
`(1)/(2)`m v²

Plug in the given values:

KE =
`(1)/(2)` (35 kg) · (1.2 m/s)²

KE =
`(1)/(2)` (35) · 1.44

KE = 17.5 · 1.44

KE = 25.2 J

There is a kinetic energy of 25.2 Joules.

Answer 2

The answer is 25.2 J

Step-by-step explanation:

The kinetic energy of an object can be found by using the formula

`KE = (1)/(2) m {v}^(2) \\`

where

m is the mass

v is the velocity

From the question we have

`KE = (1)/(2) * 35 * {1.2}^(2) \\ = 17.5 * 1.44`

We have the final answer as

25.2 J

Hope this helps you