Question

The force of 10N acts on a body of mass 2kg for a distance of 1m . The kinetic energy acquired by the body is

Answer 1

Step-by-step explanation:

Begin by finding the acceleration with Newton's second law: F = ma.

10 = 2 * a => a = 5.0 m/s^2

Then use the "shortcut" velocity equation
`v^2` =
`u^2`+ 2 a * x

v =
`0^2 + √(2(5.0) * 1)` = 3.16

Then use the equation for kinetic energy: k =
`(1)/(2) mv^2`

k =
`(1)/(2) * 2*3.16^2 = 9.9856J = 9.99J`