Question

I've been stuck on this for I little bit now and could use some help:)

Answer 1

The answer would be:

6,250 joules

Here's how to do it:

`KE = (1)/(2)mv^(2)`

KE = kinetic energy (joules)

m = mass (kg)

v = velocity (m/s)

So with that formula let's figure out what was given to you.

500 kg and 5m/s

You know which is which based on the unit.

m = 500kg

v = 5m/s

Now all you need to do is plug it into your formula and solve.

`KE=(1)/(2)mv^(2)`

`KE= (1)/(2)(500kg)(5m/s)^(2)`

`KE = (1)/(2)(500kg)(25m^(2/)s^(2))`

`KE = (1)/(2)(12,500kg\cdot m^(2)/s^2})`

`KE = 6,250kg\cdot m^(2)/s^(2)`

The unit
`kg\cdot m^(2)/s^(2)` also means joules

So the final answer is 6,250 joules.