To determine which unit abbreviation is a measurement of force, let's analyze each of the given options:
A. \( \frac{m}{s} \) - This is the unit for speed or velocity. It signifies meters traveled per second.
B. \( \frac{m}{s^2} \) - This is the unit for acceleration. It signifies meters traveled per second squared.
C. N - This is the unit for force, known as the Newton (N). In physics, force is defined as mass times acceleration, with the exact unit being \( kg \cdot \frac{m}{s^2} \), which is defined as a Newton.
D. \( \frac{N}{s} \) - This is the unit for the rate of change of force with respect to time. It implies how force changes over time.
Given these analyses:
- \( m/s \) is a unit for speed.
- \( m/s^2 \) is a unit for acceleration.
- \( N \) is the unit for force.
- \( N/s \) is the unit for the rate of change of force.
Thus, the correct answer is:
C. N
