2. Gimli and Legolas are on a frozen pond. The pond surface is frictionless and horizontal. Legolas of mass m is originally standing still, gazing into the distance to look out for Orcs. Gimli with mass M is originally moving in the positive y-direction with speed V. He collides with Legolas. After the collision Legolas is moving with speed 1⁄2V at angle θ from the positive y-direction, as shown in the figure, while Gimli is moving at an unknown speed in some unknown direction. a) Derive an expression for Gimli’s speed after the collision, in terms of system parameters. b) Derive an expression for the impulse delivered to Legolas by Gimly in unit vector notation. y
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Physics, 21.06.2019 19:20
Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?
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Physics, 22.06.2019 16:30
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 18:40
Smallest intensity of a stimulus that you can detect 50 percent of the time is
Answers: 1
2. Gimli and Legolas are on a frozen pond. The pond surface is frictionless and horizontal. Legolas...
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