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3 years ago

4. Two forces act on a 2 kg object as shown. What is the magnitude of the acceleration of the object?

Physics

1 answer:

aleksandrvk [35]3 years ago

4 0

The resultant force on the object is

∑ F = 〈0, 8〉 N + 〈6, 0〉 N = 〈6, 8〉 N

which has a magnitude of

F = √((6 N)² + (8 N)²) = √(100 N²) = 10 N

By Newton's second law, the acceleration has magnitude a such that

F = m a

10 N = (2 kg) a

a = (10 N) / (2 kg)

a = 5 m/s²

so the answer is B.

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3 years ago

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malfutka [58]

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Answer:

The system loses 90 kJ of heat

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We can answer the question by using the 1st law of thermodynamics, which states that:

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