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Q1. You are driving to the grocery store at 20. You are 100 from an intersection when the traffic light turns red. Suppose that your reaction time is 0.70 and that your car brakes with constant acceleration. What acceleration would bring you to rest right at the intersection? How long does it take you to stop?

Q2. Two small non conducting spheres have a total charge of 93 mu {rm{C}}.When placed 1.12m apart, the force each exerts on the other is 11.4N and is repulsive. What is the charge on each?

What if the force were attractive?

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Category:- Physics
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