4) a drag racer starts from rest and accelerates at 10 m/s2 for the entire distance of 400 m (1/4
mile). what is the velocity of the race car at the end of the run?

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1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//