Respuesta :

39.8 m/s

As, this is a free falling object with some  ,  initial velocity

so, u = 30m/s

the given time t = 1 sec

so th efinal velocity will be find out by using kinematic equation

Using v = u + at

v = 30 + 9.8 * 1

v = 39.8 m/s

This will be speed after 1 second.

  • kinematics equation used in mechanical branch an dused to find various parameters, there are generally four kinematics equation widely used.
  • Vf = Vi + a*t
  • ∆x = Vi*t + 1/2a*t²
  • Vf² = Vi² + 2a*∆x
  • ∆x = 1/2 (Vi + Vf)*t

To know more about   kinematic equation   visit : https://brainly.com/question/24458315

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