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Yanka [14]
3 years ago
13

An object with a mass of 375g is moving with a constant velocity. It has a force of -20 N applied to it. Determine the accelerat

ion of the object. What is happening to the object?
Physics
1 answer:
olga55 [171]3 years ago
8 0

Answer:

Explanation:

Convert the mass to kg:

375g = 375/1000kg = 0.375kg

F = ma

-20 = 0.375a

a = -20/0.375

a = -53

The object is accelerating at 53m/s/s backwards assuming that the forward motion is positive.

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Bone has a Young’s modulus of about
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A small object with momentum 7.0 kg∙m/s approaches head-on a large object at rest. The small object bounces straight back with a
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Answer:

The magnitude of the large object's momentum change is 3 kilogram-meters per second.

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Under the assumption that no external forces are exerted on both the small object and the big object, whose situation is described by the Principle of Momentum Conservation:

p_{S,1}+p_{B,1} = p_{S,2}+p_{B,2} (1)

Where:

p_{S,1}, p_{S,2} - Initial and final momemtums of the small object, measured in kilogram-meters per second.

p_{B,1}, p_{B,2} - Initial and final momentums of the big object, measured in kilogram-meters per second.

If we know that p_{S,1} = 7\,\frac{kg\cdot m}{s}, p_{B,1} = 0\,\frac{kg\cdot m}{s} and p_{S, 2} = 4\,\frac{kg\cdot m}{s}, then the final momentum of the big object is:

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The magnitude of the large object's momentum change is 3 kilogram-meters per second.

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