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?

Momentum = (mass) x (speed).

Original momentum = (1.5 kg) x (15 m/s) = 22.5 kg-m/s

New momentum = (1.5 kg) x (22 m/s) = 33 kg-m/s.

The change in momentum is (33 - 22.5) = + 10.5 kg-m/s.

The change in the object's momentum is identical to

the impulse delivered to it.