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## Homework Statement

An object of mass m = 2.3±0.1 kg is moving at a speed of v = 1.25±0.03 m/s. Calculate the kinetic energy (K = 1 mv2) of the object. What is the uncertainty

￼in K?

## Homework Equations

k=1/2mv^2

## The Attempt at a Solution

I have figured out that the kinetic energy is 1.8 J, but how do I figure out the level of uncertainty for this question? We do not use derivatives yet.

Can I take the equation for uncertainty of a power and uncertainy of a constant and add them together? :

change in z= k change in x

=1/2 * 0.1kg

change in z= nx ^n-1 * change in x

=2 * 1.25 ^2-1 * 0.03

then add them together to give an uncertainty of + or - 0.125?