Question

A stuntman plans to run across a roof top and then horizontally off it to land on the roof of the next building. The roof of the next building is 4.9 m below the first one and 6.2 m away from it. The minimum roof top speed for successful jump is –

• A. 6.2 m s^–1
• B. 8.7 m s^–1
• C. 9.8 m s^–1
• D. 10 m s^–1

Answer 1

Answer: (A)

6.2 m s^–1

Answer 2

x = $u \sqrt { \frac { 2 \mathrm { H } } { \mathrm { g } } }$ , 6.2 = $u \sqrt { \frac { 2 ( 4.9 ) } { 9.8 } }$