Question

the mass of ball A is double to the mass of another ball B. The ball A moves at half the speed of ball B. Calculate the ratio b/w kinetic energy of ball A to ball B​

Answer 1

Answer:

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Answer 2

Answer:

mb = b

ma = 2b

Vb = V

Va = V/2

K.E. = 1/2mv^2

$kea \: = \frac{1}{2} \times 2b \times \frac{v {}^{2} }{2 {}^{2} } \\ kea \: = \frac{bv {}^{2} }{4} \: (1) \\ keb = \frac{1}{2} bv {}^{2} (2) \\ dividing \: \frac{(1)}{(2)} \\ \frac{bv {}^{2} }{4} \times \frac{2}{bv {}^{2} } = \frac{1}{2} \\ kea \: = \frac{keb}{2}$