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Physics, 03.07.2019 02:00 Dajabrooks492
A28 g bullet pierces a sand bag 29 cm thick. if the initial bullet velocity was 55 m/s and it emerged from the sandbag with 18 m/s. what is the magnitude of the friction force (assuming it to be constant) the bullet experienced while it traveled through the bag? ans 130 n (hint: use work energy theorem to calculate work done by frictional force, and use use the definition of work to find the force)
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