38*10=380 N
To be more exact, 38 should be multiplied by 9.8 instead of 10.
C. Seismic energy
This is energy that is released in earthquakes.
Answer:
Less than 18000N
Explanation:
Given

This question will be answered using Newton's third law.
Understanding this law, it implies that reaction force is equal and opposite to the force exerted.
This implies that;
If the force exerted on the ball is 18000N
the force exerted is -18000N
So, the option that answers the question is less than 18000N because -18000N < 18000N