Answer:
B. 6 cm
Explanation:
First, we calculate the spring constant of a single spring:

where,
k = spring constant of single spring = ?
F = Force Applied = 10 N
Δx = extension = 4 cm = 0.04 m
Therefore,

Now, the equivalent resistance of two springs connected in parallel, as shown in the diagram, will be:

For a load of 30 N, applying Hooke's Law:

Hence, the correct option is:
<u>B. 6 cm</u>
I believe it is -1.11 m/s^2. I will let you know if its correct
Answer:
Quick action was in this as a thought of he knew he could die from this
Acceleration=(change in speed)/(time for the change). 43/0.28 = 153.6 m/s^2.