Question

If a 2.2-kg ball is thrown with a velocity of 10m/s what is its KE​

Answer 1

110 joules

Explanation:

`Mass = 2.2kg\\Velocity = 10m/s \\K.E = (1)/(2) mv^2\\K.E = (1)/(2) * 2.2 * 10^2\\K.E = (1)/(2) * 220\\K.E = (220)/(2) \\K.E = 110 joules`

Answer 2

The answer is 110 Joules

Explanation:

Kinetic energy ( KE) of an object is given by

`KE = (1)/(2) m {v}^(2)`

where

m is the mass

v is the velocity

From the question

m = 2.2 kg

v = 10 m/s

Substitute these values into the above formula

That's

`KE = (1)/(2) * 2.2 * {10}^(2)`

`KE = 1.1 * 10`

We have the final answer as

Kinetic energy = 110 Joules

Hope this helps you