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