A skateboarder shoots off a ramp with a velocity of 6.80ms, Ask an Expert

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Q. A skateboarder shoots off a ramp with a velocity of 6.80m/s, directed at an angle of 59° above the horizontal. The end of the ramp is 1.10 m above the ground. Let the x axis be parallel to the ground, +y direction be vertically upward, and take as an origin the point on the ground directly below the top of the ramp.

Q. A blacksmith heats a 1kg iron horseshoe to 470 degrees C then plunges it into a bucket containing 15 kg of water at 22 degrees C. What is the final temperature?

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