Question

Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to
object 1, object 2 falls:
(A) half as far (B) twice as far (C) three times as far (D) four times as far (E) sixteen times as far

Answer 1

Answer:

(B) twice as fast

Explanation:

consider the distance taken by both to be'x'

$speed = \frac{distance}{time}$

hence

died of 1 is

$\frac{x}{4}$

and speed of 2 is

$\frac{x}{8}$

hence

while comparing both speeds we get

$speed \: of \: obect \frac{1}{2} = \frac{x}{4} \div \frac{x}{8} = \frac{x}{4 } \times \frac{8}{x} = \frac{2}{1}$

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