Physics, 20.09.2019 13:00 helloitschump0vfdz
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface.
what would be the best research question to guide the girls' experiment?
a) does the amount of surface area affect the friction on the moving car?
b) will the car travel fastest on the glass surface?
c) how does the angle of the ramp affect the speed of the car?
d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 2
Physics, 21.06.2019 19:10, lindsey0456
Suppose you were asked to find the torque about point p due to the normal force n in terms of given quantities. which method of finding the torque would be the easiest to use?
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Physics, 22.06.2019 11:20, kendallnowell18
If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
Answers: 1
Physics, 22.06.2019 13:20, Jbutler15
This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?
Answers: 3
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp...
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