An object with a mass of 1.5 kg changes its velocity from +15 m/s to +22 m/s during a time interval of 3.5 seconds. What impulse was delivered to the object?

Impulse equals the change in momentum: J = m(v_f − v_i). The velocity change is 22 − 15 = 7 m/s, so J = 1.5 × 7 = 10.5 N·s, which rounds to 11 N·s. Therefore, the correct choice is 11 N·s.

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