Kinematics Question 211

Question: With what velocity a ball be projected vertically so that the distance covered by it in 5th second is twice the distance it covers in it’s 6th second (g=10m/s2) [CPMT 1997; MH CET 2000]

Options:

A) 58.8 m/s

B) 49 m/s

C) 65 m/s

D) 19.6 m/s

Show Answer

Answer:

Correct Answer: C

Solution:

hnth=ug2(2n1)

h5th=u102(2×51)=u45

h6th=u102(2×61)=u55 Given h5th=2×h6th .By solving we get u=65 m/s



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक