Flag IIT JEE Entrance Exam> A body is thrown vertically upwards with ...
question mark

A body is thrown vertically upwards with an initial velocity u reaches maximum height in 6 seconds. The ratio of distance travelled by the body in the first second and seventh second is:
A.) 1 : 1
B.) 11:1
C.) 1 : 2
D.) 1 : 11

Akanksha Sharma , 8 Years ago
Grade 11
anser 1 Answers
Soumya Ranjan Mohanty

Last Activity: 8 Years ago

Dear student,
for full motion,
v=u-gt
=>0=u-gt
=>u=gt=10*6=60 ms^-1
 
dist travelled in first second=s1= u-(g/2)*(2n-1) = 60-5*1=55
dist travelled in seventh second=s7= u-(g/2)*(2n-1) =60-5*13=-5 (negative as direction is different)
so ratio =s1:|s7|
=55:5
=11:1 (B)
so B is the correct answer.
Thanks,
Hope it helped.
Soumya Ranjan Mohanty.
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments