In Physics / High School | 2014-06-07

A rock is dropped into a well and hits the water in 5 seconds. If there is no air resistance, what would be the rock's final speed?

Asked by kennethwsalmen

Answer (3)

The acceleration of gravity is 9.8 meters per second².
So, 5 seconds after beginning from zero speed, its speed is (5 x 9.8) = 49 m/s² .

Answered by AL2006 | 2024-06-10

Here u= 0m/s t=5sec v=?
From newton's first equation of motion- v=ut v= 0* 5=0m/s

Answered by ashutosh | 2024-06-10

The final speed of the rock, dropped into a well for 5 seconds, is 49 m/s. This is calculated using the formula v = g ⋅ t where g ≈ 9.8 m/s 2 .
;

Answered by AL2006 | 2024-09-30

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