What is the speed of the block after the force is applied

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1) A force of 2 N is applied to a stationary 5 kg block for 0.3s. What is the speed of the block after the force is applied?

2) A balloon is full of air. The air in the balloon has a mass of 3 g. The uninflated balloon has a mass of 15 g. All the air is released from the balloon at a rate of 10 m/s. What speed does the balloon have?

3) A train (500 kg) is moving down a track at 5 m/s. It moves toward a stationary train car (2000 kg). The 2 cars link together. What is their speed afterwards?

Reference no: EM13333075

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