Question

A stuntman plans to run across a roof top and then horizontally off it to land on the roof of next bulding. The roof of the next building is 4.9 metre below the first one and 6.2 metre away from it. What should be his minimum roof top speed in m/s. so that he can successfully make the jump?
A. 3.1
B. 4
C. 4.9
D. 6.2

Answer 1

Correct Answer - D
`x=sqrt((2h)/(g))xxu`
`rArr u=xsqrt((g)/(2h))=6.2xxsqrt(9.8)/(2xx4.9)=6.2m//s`