Question

What’s the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms? Use the formula, V=square root 2 {kinetic energy} divided by mass. A. 3 m/s B. 5 m/s C. 7 m/s D. 8 m/s E. 10 m/s

Answer 1

Answer:

Given,

Kinetic energy (K.E) = 100J

Mass (M) = 2kg

To find:-

Velocity

By applying, K.E = 1/2mv^2

100 = 1/2×2×v^2

100 = 1×v^2

v^2 = √100

v = 10m/s.

Answer 2

Answer:

the person above is correct.