Question

A grasshopper can jump a maximum
horizontal distance of 40 cm. Its speed along
vertical direction will be
(2) 10 m/s
(1) 10√2 m/s
(3) V2 m/s
(4) 2√2 m/s
en laras​

Answer 1

Answer:

Range R = 40 cm  jumping at Ф = 45° to the horizontal.

let g = 10 m/sec²

R = u² Sin2Ф / g 

0.40 m = u² * 1 / g

u² = 4

u = 2 m/s

Horizontal component of speed = u cosФ = 2 * 1/√2 = √2 m/s

  = 1.414 m/s

hope this helps you