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ikadub [295]
4 years ago
9

what is newton's second law of motion? forces are balanced when they are equal and opposite. an object at rest or in motion will

remain at rest or in motion unless acted upon by an unbalanced force. the smaller the mass of an object, the greater the acceleration of that object when a force is applied. the greater the force applied, the greater the acceleration. every reaction is equal to the force applied.
Physics
2 answers:
Troyanec [42]4 years ago
6 0
The smaller the mass of an object, the greater the acceleration of that object when a force is applied because mass and acceleration are inversely related The greater the force applied, the greater the acceleration as Force and acceleration are directly related quantities.
sleet_krkn [62]4 years ago
5 0

Answer:

B

Explanation:

The Newton's second Law of motion states that:

- An object at rest or in motion will remain at rest or in motion unless acted upon by an unbalanced force.

- The expression is given by:

                                   F_net = m*a

- If F_net  = 0, then a = 0.

- However, if a = 0, not always is velocity is zero but the change in velocity is.

Hence, the object in motions travels with a constant velocity even if all the forces are balanced or no net force is present.

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As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff ideal sprin
shepuryov [24]

Answer:

The magnitude of force must you apply to hold the platform in this position = 888.89 N

Explanation:

Given that :

Workdone (W) = 80.0 J

length x = 0.180 m

The equation  for this  work done by the spring is expressed as:

W = \frac{1}{2}k_{eq}x^2

Making the spring constant k_{eq} the subject of the formula; we have:

k_{eq} = \frac{2W}{x^2}

Substituting our given values, we have:

k_{eq} = \frac{2*80}{0.180^2}

k_{eq} = 4938.27 \ N.m^{-1}

The magnitude of the force that must be apply  to the hold platform in this position is given by the formula :

F = k_{eq}x

F = 4938.27*0.180

F = 888.89 N

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Explanation:

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