Arace car is moving with a velocity of 144 km/h the driver applies the brakes and the car comes to a halt in 12 seconds what is the average acceleration of the car during those 12 seconds

Average acceleration = (change in speed) / (time for the change)

Change in speed = (speed at the end) - (speed at the beginning)

Change in speed = (zero) - (144 km/hr)

Change in speed = -144 km/hr

(-144 km/hr) x (1,000 m/km) x (1 hour/3600 sec) = -40 m/s

Time for the change = 12 seconds

Average acceleration = (-40 m/s) / (12 s)

Average acceleration = -3.33 m/s² (about 1/3 of a 'G')

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

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the answer is a 3.8cm

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