Question

A body is thrown down with a velocity 10m/s. What's it's velocity after 10 second

Answer 1

Answer:

110 m/s or 108 m/s (Depending on accleration due to gravity)

Explanation:

$v = u + at$ (Only applicable with constant acceleration)

t = 10 seconds

initial velocity (u) = 10 m/s

Acceleration due to gravity is assumed as 10 m/s²

v = 10 + 10(10)

= 110 m/s

If acceleration due to gravity is assumed as 9.8 m/s²

v = 10 + 9.8(10)

= 108 m/s

Answer 2

According to the question;

a = 9.8 m/s² ( acceleration due to gravity)

t = 10 seconds

initial velocity (u) = 10 m/s

final velocity (v) =?

⇒ $v = u +at$

⇒ v = 10 + 9.8(10)

⇒ 108 m/s

• Velocity:- it is the rate of change of an object's position with respect to a frame of reference and time. It may appear complicated, but velocity is simply the rate at which something moves in a specific direction. Because velocity is a vector quantity, we must define it in terms of both magnitude (speed) and direction. Its SI unit is a meter per second (m/s). When the magnitude or direction of a body's velocity changes, it is said to be accelerating.

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