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You are investigating the relationship between force and acceleration. Which of the following would NOT be a suitable hypothesis? when the force decreases from 5N to IN,the acceleration should drop from 5m/s/s to 1m/s/s all forces produce an acceleration in an object's motion as the force doubles then the acceleration will also double

Question

You are investigating the relationship between force and acceleration. Which of the following would
NOT be a suitable hypothesis?
when the force decreases from 5N to IN,the acceleration should drop from 5m/s/s to 1m/s/s
all forces produce an acceleration in an object's motion
as the force doubles then the acceleration will also double

You are investigating the relationship between force and acceleration. Which of the following would NOT be a suitable hypothesis? when the force decreases from 5N to IN,the acceleration should drop from 5m/s/s to 1m/s/s all forces produce an acceleration in an object's motion as the force doubles then the acceleration will also double

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SianMaster · Tutor for 5 years

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The hypothesis that is NOT suitable is: **All forces produce an acceleration in an object's motion**.

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## Step 1<br />To determine which hypothesis is not suitable, we need to understand the relationship between force and acceleration according to Newton's second law of motion. Newton's second law states that \(F = ma\), where \(F\) is the force applied to an object, \(m\) is the mass of the object, and \(a\) is the acceleration of the object.<br /><br />## Step 2<br />Let's analyze each hypothesis in the context of Newton's second law:<br /><br />1. **When the force decreases from 5N to 1N, the acceleration should drop from \(5 \, m/s^2\) to \(1 \, m/s^2\)**:<br /> - This hypothesis implies a direct relationship between force and acceleration, which is consistent with Newton's second law. If the force decreases by a factor of 5, the acceleration should also decrease by a factor of 5, assuming mass remains constant.<br /><br />2. **All forces produce an acceleration in an object's motion**:<br /> - This hypothesis is not accurate. A force will produce acceleration only if it is unbalanced. If the forces are balanced (net force is zero), there will be no acceleration.<br /><br />3. **As the force increases, the acceleration will also increase**:<br /> - This hypothesis is consistent with Newton's second law. If the force increases and the mass remains constant, the acceleration will also increase proportionally.<br /><br />4. **As the force doubles, the acceleration will also double**:<br /> - This hypothesis is also consistent with Newton's second law. If the force doubles and the mass remains constant, the acceleration will double.<br /><br />## Step 3<br />Based on the analysis, the hypothesis that does not align with the principles of Newton's second law is:<br /><br />- **All forces produce an acceleration in an object's motion**<br /><br />This is because not all forces produce acceleration; only unbalanced forces do.
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