A block of mass m 5.00 kg is released from rest from point a

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A block of mass m = 5.00 kg is released from rest from point A and slides on the frictionless track shown in the figure. Determine (a) the block’s speed at points B and C and (b) the net work done by the gravitational force on the block as it moves from point from A to C.
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The only thing I'm having trouble with is not knowing how to figure out what formula to use for these problems

thecarebearstare
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Thank you so much for these videos! I was really struggling in my college physics class. As a straight A student I was not used to that and did not know what to do. Your videos help make my homework seem simple.

janetreat
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bekiao
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This question IS one of my homework question and OMG thank you for saving my butt!!!!
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YoursTrulyNusxoxo
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Homework question, great video to prepare for the quiz tomorrow.Thank u

Lynem
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apparently using the work energy thereom gave me the wrong answer for part B. I plugged everything in right to and even confirmed if I had the right velocities. Any idea why?

seasonsof
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3) A sledge of mass 30 kg starts from rest and is pulled with a force of 50 N against a resistance of 25 N for a distance of 15 m. How fast is it then going?

How about this problem sir?, Help me

jyaraurmatam
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@2:10, The box is already in motion, hence not starting from rest. Why did you omit the 1/2 mv^2?

rashmikababajee
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Can you guess in which class I need help most? Thank you so much!

personificashun