Physics, 28.09.2019 16:20 humpty21

Agirl is her brother slide their dog m = 25kg along an icy frictionless sidewalk. the boy is pulling a rope t = 10n tied to the dogs collar and the girl is pushing with 7n of force. what is the net force on the dog and it's acceleration?

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Answer from: kalebbenton15

0.68 m/s²

Explanation:

Given:

Mass of the dog, m = 25 kg

Tension in the rope = 10 N

Force applied by the girl on the dog = 7 N

Now,

since the boy is pulling the dog and the girl is pushing the dog

Thus,

The net force on the dog = 10 N + 7 N = 17 N

also,

Net force on the dog = Mass × Acceleration

thus,

25 kg × Acceleration = 17 N

Acceleration = $\frac{\textup{17 N}}{\textup{25 kg}}$

Acceleration = 0.68 m/s²

Answer from: Quest

12000j is work done

Answer from: Quest

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Agirl is her brother slide their dog m = 25kg along an icy frictionless sidewalk. the boy is pullin...

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