Question

Ashlyn threw a 1.6 kg ball. If she used 122 Joules of work to throw the ball, what was the initial velocity of the ball as it left her hand?​

Answer 1

The first person that answered is is correct just to let you know!

Answer 2

`12.35\:\mathrm{m/s}`

Step-by-step explanation:

We can use the work-energy theorem to solve this problem. The work-energy theorem states that the work done on an object will be equal to that object's change in kinetic energy. Thus, we have the following equation:

`W=\Delta KE,\\W=(1)/(2)mv^2-0,\\122=(1)/(2)\cdot 1.6\cdot v^2,\\v^2=152.5,\\v\approx \boxed{12.35\:\mathrm{m/s}}`