Which of the following is a unit of impulse?
Correct answer: B. Kgm/s
- A. Nm/s
- B. Kgm/s
- C. N/s
- D. N/m
Explanation
Impulse refers to the force acting on an object for a short period of time. Its units include Ns (newton-second) and kgm/s (kilogram metre per second). It can be calculated by this formula: ΔP = ΔF x t
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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