CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A body is moving with uniform acceleration describes 40 m in the first 5 sec and 65 m in next 5 sec. Its initial velocity will be 


A
m/s
loader
B
2.5 m/s
loader
C
5.5 m/s
loader
D
11 m/s
loader

Solution

The correct option is B 5.5 m/s



 S1=ut+12at2      ....(i)

and velocity after first t sec

v=u+at

Now, S2=vt+12at2

=(u+at)t+12at2       ....(ii)

Equation (ii)-(i)  S2S1=at2

 a=S2S1t2=6540(5)2=1 m/s2

From equation (i),we get,

S1=ut+12at2 40=5u+12×1×25

5u=27.5 u=5.5 m/s


Physics

Suggest Corrections
thumbs-up
 
5


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image