Question

Suppose An Object In Free Fall Is Dropped From A Building. Its Starting Velocity Is 0 m/s. Ignoring The Effects Of Air Resistance, What Is The Speed (in m/s) Of The Object After Falling 3 Secs?

Answer 1

The speed would be equal to: 29.41995 m/s

Answer 2

Answer: 29.4 m/s

Step-by-step explanation:

We will use the first equation of motion:

v = u + a t

v is the final speed, u is the initial speed, a is the acceleration and t is the time interval.

Given:

initial velocity, u = 0

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

time, t = 3 s

Final velocity, v = 0 + 9.8 m/s²× 3 s = 29.4 m/s

Thus, the speed of the object after falling for 3 s is 29.4 m/s