A Steady Horizontal Force Lasting for 2 $3.2 \mathrm {~m} / \mathrm { s } ^ { 2 }$

Multiple Choice

A steady horizontal force lasting for 2.1 s gives a 1.25 kg object an acceleration of $3.2 \mathrm {~m} / \mathrm { s } ^ { 2 }$ on a frictionless table. What impulse does this force give to the object?

A) $2.6 \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
B) $26 \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
C) $8.4 \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
D) $11 \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$