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`        A vehicle moving with a constant acceleration from A to B in a straight line AB, has velocities u and v at A and B. C is the mid point of line AB. If the time taken to travel from A to C is twice the time taken to travel from C to B then the velocity of the vehicle at B is ? 1) 5u    2) 6u   3) 7u    4) 8uKindly please ,explain me this problem im stuck with .! Thank you :)`
4 years ago

noogler
489 Points
```							velocity at B is 7u                                 t1                                      t2                .-----------------------------------------.----------------------------------------.                      t1=2t2              A  (u)                                    C (vl)                                B(v) from A to C:                                                   from C to B: vl=u+at1                                                                v=vl+at2v1=u+2at2                                                             vl=v-at2                               from above eq.  u-v = -3at2  …........................(1)x=ut1+1/2at12                                                                              x=vlt2+1/2at22        substitute v1=v-at2 in it                               solving aove two eq. u get 2u-v= -5/2at2  …............................(2)  solving 1 and 2 u get                 u=1/2at2            sub in u-v= -3at2              v=7/2at2................v=7u  APPROVE IF USEFUL!!!!!!!!!!!!!!!!!!!
```
4 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions