What is the acceleration of an object that moves at a constant velocity of 2.0 meters per second for 5 seconds?

Constant velocity means moving in a straight line at a speed that doesn't change. If the object is moving with constant velocity then its acceleration is zero. Acceleration is the rate at which velocity is changing.

    5.5 n======    assuming that      we have      m = 0.145 kg    a = 38 m/s²therefore    5.51 n, but two significant figures.final answer: 5.5 n

You will hear a hissing sound because of the carbon dioxide escaping the can or bottle