A car is traveling at 15.5 m/s, and the driver sees a traffic light turn red. After 0.321 s (the reaction time), the driver applies the brakes, and the car decelerates at 6.2 m/s2. What is the stopping distance of the car, as measured from the point where the driver first sees the red light?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?