How are Newton’s second and third laws of motion important to your everyday life?

1 answer:

5 0

newton's second law states that an object accelerate only when there is a net force acting on it. this law is important in studying motions where the speed increases at constant rate or decreases at constant rate.

newton's third law states that for every action there is equal and opposite reaction. this law helps in understanding why a person gets injured while punching a wall with some force.

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dsp73

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When you whisper, you produce a 10-dB sound.

lora16 [44]

All you would do is for a, 10 times 2 is 20 so it would be 20-dB
For b, 10 times 4 is 40 so it would be 40-dB
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A 1.0-kg block and a 2.0-kg block are pressed together on a horizontal frictionless surface with a compressed very light spring

egoroff_w [7]

Answer:

4. both blocks will both have the same amount of kinetic energy.

Explanation:

When the blocks are released free from the compression force, the spring exerts equal and opposite force on each block but the block with heavier (double) mass will attain slower ( half ) speed as compared to the lighter block according to the law of inertia. This works in synchronization to energy conservation.

Spring force is given as:

$F=k.\Delta x$

where: $\Delta x=$ length of compression in the spring

<u>We know kinetic energy is given by:</u>

$KE=\frac{1}{2} m.v^2$

Hence the kinetic energy of both the blocks is equal when they are released to move free.

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4 years ago

A submarine that is in the sea what principle is that

SIZIF [17.4K]

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gulaghasi [49]

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