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OLga [1]
3 years ago
5

Newton has Three Laws of Motion. Seat belts are used to help keep the passengers remaining in their seats during an accident. If

the seat belts are not present the passengers would continue to move forward when the car stops. Which of Newtons three laws does this demonstrate?
1st law
2nd law
3rd law
Physics
1 answer:
Jobisdone [24]3 years ago
5 0
That is the 1st Law
Your welcome and PLEASE RATE TO KEEP HELPING YOU
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Bambi the young dear was distracted Buy butterfly and jumped into the road in front of the two vehicles as shown in the diagram
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Speed of car A is given as

v_a = 70 mph

now we need to convert it into SI units

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7 0
3 years ago
A wheel with moment of inertia 25 kg. m2 and angular velocity 10 rad/s begins to speed up, with angular acceleration 15 rad/sec2
Pani-rosa [81]

Answer:

(A) Angular speed 40 rad/sec

Rotation = 50 rad

(b) 37812.5 J

Explanation:

We have given moment of inertia of the wheel I=25kgm^2

Initial angular velocity of the wheel \omega _0=10rad/sec

Angular acceleration \alpha =15rad/sec^2

(a) We know that \omega =\omega _0+\alpha t

We have given t = 2 sec

So \omega =10+15\times  2=40rad/sec

Now \Theta =\omega _0t+\frac{1}{2}\alpha t^2=10\times 2+\frac{1}{2}\times 15\times 2^2=50rad

(b) After 3 sec \omega =10+15\times 3=55rad/sec

We know that kinetic energy is given by Ke=\frac{1}{2}I\omega ^2=\frac{1}{2}\times 25\times 55^2=37812.5J

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What two measuring units can i use to measure the distance
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Feet and inches or millimeters or centimeters or meters or miles or kilometers
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