1let the total distance be 2x km
acc. to question for the first car
t1 + t2 = 2 hr
x/30 + x/45 = 2
x/18= 2
x = 36 km
total distance is = 2 * 36 = 72 km
for the second car
at2/2=72
=>a4/2=72
=>a = 36 kmh-2
Q- Two cars left place A simultaneously and reached the place B in 2 hrs.The first car traveled half the distance with a speed of 30km/hr and the other half at a speed of 45km/hr.The second car at the same time covered the entire distance with a const. acceleration from rest.Find the acceleration of the 2nd car.
Explain please.
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