An object starting from rest travels 20m in first 2s and 160m in next 4s. What will be the velocity
after 7s from the start

Question

An object starting from rest travels 20m in first 2s and 160m in
next 4s What will be the velocity
after 7s from the start

Teja Teppala · Accepted Answer

Dear student
Distance travelled in time t1=2 seconds =s1= 20 mistance covered in next 4 seconds = 160 mDistance travelled in time t2=6 seconds =s2= 20+160=180 mInitial velocity u=0 m/s⇒s=12at2⇒s2-s1=12at22-12at12=12at22-t12⇒a=2s2-s1t22-t12Plugging the values we geta=2180-2062-22=216036-4=32032=10 ms2Velocity after t=7 seconds, v=u+at=0+10×7=70 m/s
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An object starting from rest travels 20m in first 2s and 160m in next 4s. What will be the velocity after 7s from the start

An object starting from rest travels 20m in first 2s and 160m in next 4s. What will be the velocity
after 7s from the start