Physics, 15.12.2020 19:10, emilyturchon
A roller coaster containing four cars is accelerating at 15 m/s2 before it comes to an abrupt stop at the end of the ride. The mass of one car is 200 kg. How much force was exerted on the roller coaster to bring it to a stop?
A - 60N
B - 800N
C - 3000N
D - 12000N
Answers: 3
Physics, 21.06.2019 21:50, glocurlsprinces
Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?
Answers: 2
Physics, 22.06.2019 06:30, kdfawesome5582
Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.
Answers: 2
Physics, 22.06.2019 09:40, wi8wuwj283jendjdudjd
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.
Answers: 1
A roller coaster containing four cars is accelerating at 15 m/s2 before it comes to an abrupt stop a...
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