Question

How much momentum does a `1/2` `kg` object moving at `64` `ms^-1` have?

Answer 1

Kinetic energy is just given by `E_k=1/2mv^2`. In this case, `E_k=1/2*1/2*64^2 = 1024` `J`

Explanation:

Not too much more to explain for this question. Kinetic energy is the energy something has because it has mass and is in motion, and is calculated using the equation `E_k=1/2mv^2`, where `E_k` is the kinetic energy `(J)`, `m` is the mass `(kg)` and `v` is the velocity `(ms^-1)`.