Can someone help me solve this ?! Will mark brainliest

Roberto has twice the mass his sister Mary has but runs at the same velocity as Mary. Will his kinetic energy be twice as much?

(Mary has a mass of 40 kg and sprints at 1 m/s)

Can someone help me with this (sorry I don’t have enough point for a question and no one has answered this and I’m confused)

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rhishi2007 rhishi2007 · Answer 2 · 2020-05-12T01:06:30+02:00

Answer:

The second, the third, and the last one

Step-by-step explanation:

The second is correct because we just multiply by 6 on both sides, thus not changing the value of the x

The third is correct because we just distribute the 6 into the parenthesis, and multiply the equal side by 6, thus just simplifying the expression, not changing it.

The last is correct because you just subtract 4 from both sides, and since done to both sides, doesn't change the equation.

Hope i helped you :)