Dynamics 15-25| The balloon has a total mass of 400 kg including the passengers and ballast.

Question: The balloon has a total mass of 400 kg including the passengers and ballast. The balloon is rising at a constant velocity of 18 km/h when h- 10 m. If the man drops the 40-kg sand bag, determine the velocity of the balloon when the bag strikes the ground. Neglect air resistance.
Problem 15-25 from:
Engineering Mechanics: Dynamics, 14th edition
Russell C. Hibbeler
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Help me with this question, thanks you.
A car has an initial speed of 25m/s and a constant deceleration of 3 Determine the velocity of the car when t=4s What is the displacement of the car during the time interval? How much time is needed to stop the car?

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@@LearningbyTeaching This is kinematics chapter

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