A car traveling east at 35.9 m/spasses a trooper hiding at the roadside. The dri

Question

A car traveling east at 35.9 m/spasses a trooper hiding at the roadside. The driver uniformlyreduces his speed to 25.0 m/s in 2.90s. (a) What is the magnitude and direction of thecar's acceleration as it slows down?
magnitude m/s2 what is the direction? east, west, south, or north (b) How far does the car travel in the 2.90-s time period?
m (a) What is the magnitude and direction of thecar's acceleration as it slows down?
magnitude m/s2 what is the direction? east, west, south, or north (b) How far does the car travel in the 2.90-s time period?
m magnitude m/s2 what is the direction? east, west, south, or north

Explanation / Answer

Considering east direction as positive . Initial velocity (u) = 35.9 m/s Final velocit (v) = 25 m/s Time taken(t) = 2.90 m/s Using the equation a = (v-u)/t =>a = (25 - 35.9)/ 2.90 = -10.9 /2.9 =-3.76 m/s2 Negative sign indicate that the acceleraton is in westdirction. b)Using the equation , v2-u2=2aS where S is the distance travelled S=( 252-35.92)/(2*-3.76) = 88.3 m

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