contestada

A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down towards the water. If air resistance is negligible, the acceleration of the bullets just before they strike the water:
(A) is greater for the dropped bullet
(B) is greater for the fired bullet
(C) is the same for both bullets
(D) depends on how high they started

Respuesta :

Answer:

Option (c)

Explanation:

Both the bullets have same acceleration because they both falls under the influence of acceleration due to gravity.

The bullet which is fired from the gun has some initial velocity but the bullet which is dropped has zero initial velocity.

the acceleration is acting on both the bullets which is equal to the acceleration due to gravity and they both in motion in the influence of gravity.

onyebuchinnaji

If air resistance is negligible, the acceleration of the bullets just before they strike the water is the same for both bullets

An object moving downwards is under the influence of Earth's gravitation pull.

In the absence of air resistance, the downward acceleration of the object is equal to acceleration due to gravity.

The two bullets will strike the water at the same time because both will be moving at equal acceleration which will be in magnitude to 9.8 m/s².

Thus, we can conclude that if air resistance is negligible, the acceleration of the bullets just before they strike the water is the same for both bullets.

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