A1400-kg car moving with a speed of 32 m/s is approaching a stoplight. the light turns yellow and the car makes an abrupt stop over a distance of 60 meters. the amount of work done on the car approximately.

a. 84,00 j
b. 268, 800 j
c. 716, 800 j
d. 840,000 j
e. 2, 688,000 j
f. none of these are correct.

c. 716, 800 J

Explanation:

t = Time taken

u = Initial velocity = 32 m/s

v = Final velocity = 0

s = Displacement = 60 m

a = Acceleration

m = Mass of car = 1400 kg

Work done is given by

The amount of work done to stop the car is 716800 J

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hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )