Answer:
(A) A ball sitting on the ground
Explanation:
Metals, for example Cesium and Francium
The change in the velocity = 4 m/s
Acceleration = 4 m/s²
<h3>Further explanation</h3>
Given
vo = initial velocity = 4 m/s
vf = final velocity = 8 m/s
t = 1 s
Required
The change in the velocity
Acceleration
Solution
the change in velocity =

Acceleration = ratio of a change in velocity and the time

Input the value :

Answer:
1
Explanation:
4 HBr + O2 → 2H 20 + 2Br 2
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