Impulse: A steady horizontal force lasting for 2.1 s gives a 1.25 kg object an acceleration of 3.2 m/s2 on a frictionless table. What impulse does this force give to the object?
A. 26 kg ? m/s
B. 11 kg ? m/s
C. 8.4 kg ? m/s
D. 2.6 kg ? m/s
Answer: C
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