A car travelling at 60km/h uniformly retards for 10s and reaches a velocity of 46 km/h. Find the retardation
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Answer:
initial velocity(u)=60km/hr=16.6m/s
time= 10s
final velocity(v)=46km/hr= 12.7m/s
accelaration =?
from v=u+at
12.7=16.6+a*10
12.7-16.6=10a
-3.9=10a
-0.39ms^-2=retardation
- sign as retardation is negative accelaration
Explanation:
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