Physics, 30.03.2020 22:04 Brangolflro
A small ball is hung by a string from the ceiling of a train car, so that the ball hangs vertically.
Moving from rest, the train car accelerates forward, and continues to accelerate. A team of
scientists observes the behavior of the ball from various locations. From which scientist's frame
of reference does the motion of the ball appear to violate Newton's Law of Inertia?
O A. on the train station platform
OB. inside of the train car
o C. in a second train car moving with constant speed in the same direction as the
first train
OD. in a third train car moving with constant speed opposite the direction of the first
train
Answers: 2
Physics, 22.06.2019 05:30
James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the
Answers: 1
Physics, 22.06.2019 10:00
Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?
Answers: 2
A small ball is hung by a string from the ceiling of a train car, so that the ball hangs vertically....
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