Question

How much work would it take to horizontally accelerate an object with a mass of `2` `kg` to `4` `ms^-1` on a surface with a kinetic friction coefficient of `1`?

Answer 1

The work done is `=16J`

Explanation:

The mass of the object is `m=2kg`

The speed is `v=4ms^-1`

The work done is equal to the kinetic energy

`W=1/2mv^2=1/2*2*4^2=16J`