Question

A stone of mass 200 gram has a kinetic energy of 100 joules Calculate the speed of the moving stone .​

Answer 1

Answer:

1 m/s

Explanation:

K.E = 1/2 MV^2

100V^2 = 100 joules

V^2= 1

V= 1 m/s...

Answer 2

Answer:

31.6 m/s or 10 × root10 m/s

Explanation:

m = 200 g = 0.2 kg

K.E. = 1/2 × m × v^2 = 100

1/2 × 0.2 × v^2 = 100

v^2 × 0.1 = 100

v^2 = 1000

v = root1000 = 10 × root10 = 31.6 m/s