Question

ball a has half the mass and eight times the kinetic energy of ball b. what is the speed ratio vava / vbvb ?

Answer 1

Ball b has eight times more kinetic energy than ball a, which has half its mass. The speed ratio is 4.

What exactly does kinetic energy mean?

Force must be applied to object in order to accelerate. To apply a force, we must work hard. Because energy has been transferred to the object, it will be moving at a new, constant speed once the operation is finished.

Given,

Two balls a and b

and the mass of ball an is half that of ball b..

Kinetic energy of ball a is eight times kinetic energy of ball b.

mₐ = $\frac{1}{2} m_{b}$

KEₐ = 8 KE$_{b}$

Kinetic energy is measured by,

KE = 1/2 mv²

KE ratios for both balls a and b are calculated,

∴ $\frac{KE_{a} }{KE_{b} }$ = $\frac{1/2 m_{a} v_{a}^{2} }{1/2 m_{b} v_{b} ^{2} }$

$\frac{8 KE_{b}}{KE_{b} }$ = $\frac{1/2 (1/2m_{b}) v_{a}^{2} }{1/2 m_{b} v_{b} ^{2} }$

16 = $\frac{v_{a} ^{2} }{v_{b} ^{2} }$

$\frac{v_{a} }{v_{b} }$ = 4/1

To know more about kinetic energy, visit:

brainly.com/question/2302596

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