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1 answer:
<h3><u>Question</u> :</h3>
Circle the scenario that shows balanced forces and will result in no movement of the gold bar.
<h3><u>Answer</u> :</h3><h3 />- 1st one is the scenario that shows balanced forces and will result in no movement of the gold bar. (circled in attachment)
In the first scenario there are equal forces of 5N acting on both sides of the gold bar, but this is not the case for the second and third scenarios. Equal forces are acting on both sides of the bar in the first scenario, hence showing balanced forces and resulting in no movement of the gold bar.
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Final speed , v = 91 km/h = 25.28 m/s .
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a) Average acceleration .
b ) Assuming the motorcycle maintained a constant acceleration, how far is it from the traffic light after 3.3 s .
Solution :
a )
We know ,by equation of motion :
b)
Also , by equation of motion :
Hence , this is the required solution .