Crickets Chirpy and Milada jump from the top of a vertical cliff. Chirpy drops downward and reaches the ground in 2.70 s, while Milada jumps horizontally with an initial speed of 95.0 cm/s. How far from the base of the cliff will Milada hit the ground? Ignore air resistance.

Respuesta :

Answer:

Explanation:

Given

Time taken to reach ground is [tex]t=2.7\ s[/tex]

Malda initial velocity [tex]u=95\ cm/s[/tex]

Let h be the height of Cliff

using [tex]h=ut+\frac{1}{2}at^2[/tex]

where, u=initial velocity

t=time

In first case chirpy drop downward thus u=0

[tex]h=0+\frac{1}{2}(9.8)(2.7)^2[/tex]

[tex]h=35.72\ m[/tex]

For Milada there is horizontal velocity u=95 cm/s=0.95 m/s[/tex]

time taken to reach the ground will be same so distance traveled in this time with 0.95 m/s horizontal velocity is given by

[tex]R=u\times t[/tex]

[tex]R=0.95\times 2.7=2.43\ m[/tex]