A constant force of 6 N acts for 5 s. What is the impulse?

A) 30 N·s

B) 15 N·s

C) 45 N·s

D) 60 N·s

Answer: A

Explanation: Use impulse = force × time for the stated idealized conditions. Substitution gives 6 × 5 = 30 N·s.

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