Question

If a rock fell off of a cliff, how fast would the rock be going after 2 seconds? 1 point a) 2m/s 1.96m/s c) 7.5m/s d) 19.6m/s.​

Answer 1

Given :  a rock fell off of a cliff,

To Find : how fast would the rock be going after 2 seconds

Solution:

V = U + at

U = initial Velocity = 0

a = g = 9.8 m/s²

t = 2 m/s

V = ?

V = 0  + (9.8) 2

=> V = 19.6  m/s

19.6m/s.​​  is the correct answer

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Answer 2

Explanation:

V = U + at

U = initial Velocity = 0

a = g = 9.8 m/s²

t = 2 m/s

V = ?

V = 0 + (9.8) 2 => V 19.6 m/s.