Physics, asked by mish71, 6 months ago

an object is falling down with a speed of 20m/s. After 3 seconds its velicity will be

Answers

Answered by Anonymous
0

Answer:

49.4 m/s or 50m/s if you take g = 10m/s²

Explanation:

u = 20m/s

a = g = 9.8m/s²

v = u + at

v = 20 + 9.8 × 3 m/s

  = 20 + 29.4 m/s

  = 49.4 m/s

Answered by athithya007
4

Question

an object is falling down with a speed of 20m/s. After 3 seconds its velocity will be  ?

Answer:

THE FINAL VELOCITY OF THE BODY IS 49.4m/s

Explanation:

Given data :

             falling speed - 20m/s

              we need to find velocity after 3 seconds

Formula applied

                      V = U+A*T

Here

V = Final velocity

U = Initial Velocity

A = Acceleration

T = Time

Explanation:

Apply the data in given formula

Initial velocity = 20m/s

Time = 3 seconds

Acceleration = 9.8m/s

The value of acceleration is taken as 9.8 because when the body is falling down then it should come down at the force gravitational pull.

The speed in which Gravity pulls the object towards it is exactly 9.8 m/s

also we can take an approximate value of 10m/s as its easy to calculate

as we need exact answer am taking the exact value of 9.8m/s

formula :

V = U+A*T

   = 20+9.8*3

   = 20+29.4

   = 49.4 m/s

THE FINAL VELOCITY OF THE BODY IS 49.4m/s

Further information

https://brainly.in/question/26659101

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