Physics, 12.07.2019 22:10 jennychen2518pbmirn
Aperson rides a bicycle down the street. the position of a reflector attached to a point on the rim of one wheel is r- (0.5m) (cos(8.8t) - 8.8t)i + sin(8.8t)j where i is the unit vector pointing in the x-direction (horizontal) and j is the unit vector pointing in the y-direction (vertical), and t is measured in seconds. the position of the reflector in the formula is measured with respect to a stationary point on the ground the center of the wheel a stationary point at the same height above the ground as the center of the wheel hint: remember that the sine of an angle has a value between -1 and 1. can the reflector ever sink below the ground? what is the velocity of the reflector at the instant when it touches the ground? zero 4.4j
Answers: 1
Physics, 21.06.2019 20:50, lokiliddel
An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.
Answers: 1
Physics, 22.06.2019 03:30, annikacorrea
Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec
Answers: 1
Physics, 22.06.2019 05:30, kaitlynmoore42
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 06:00, quetzaliescalona
A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s
Answers: 1
Aperson rides a bicycle down the street. the position of a reflector attached to a point on the rim...
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