Question

An object with a kinetic energy of 2160J has a mass of 120kg. What is its velocity?

Answer 1

What is the equation for kinetic energy?

Answer 2

ke=1/2mv2

Answer 3

So you have the KE, the mass. The only unknown left is v.

Answer 4

could you solve it

Answer 5

please

Answer 6

\[KE=1/2 \ mv^2\]

KE = 2160 J

m = 120 kg

KE = 1/2 mv^2

2KE = mv^2

2KE / m = v^2

v = sqrt( 2KE / m )

v = sqrt( 2(2160) / 120 )

v = sqrt( 4320 / 120 )

v = 36

Answer 7

Sometimes in Physics calculations, it is easier to solve for your variable and then substitute values, rather than put in values and then juggle all the numbers.