Question

2 questions in velocity.

Bird flying towards its nest w/ a mass of 0.25kg and a kinetic energy of 40.5J What is the velocity?
A Wii remote flung from a hand through a TV, with a kinetic energy of 1.44J and a mass of 4.5kg. What is the velocity?

Answer 1

a) 18m/s b) 0.8m/s

Step-by-step explanation:

You can use the Kinetic energy formula to solve for velocity. KE = 1/2mv^2. You can use simply algebra to solve for v.
`v=\sqrt{(KE)/((1)/(2) m) }` From there you can plug in the given numbers. Solving the first question would give you 18m/s and solving the second question would give you 0.8m/s.