Physics, 23.04.2020 15:24, masonbartolo8184
A baseball is thrown from a platform 10 meters above the origin (so its position in the xy-plane is a function of time t, with x(0) = 0 and y(0) = 10) in such a way that its horizontal and vertical velocity are both initially 5 meters per second. You may assume that the acceleration due to gravity is −10 meters per second squared in the y-direction, and 0 in the x-direction.
(a) Find an expression for the velocity of the ball in the y-direction as a function of time vy(t).
(b) Find an expression for the position of the ball in the y-direction, i. e. its height, as a function of time y(t).
(c) At what time t does the ball hit the ground?
(d) What is the x-coordinate of the ball at the moment it hits the ground
Answers: 1
Physics, 21.06.2019 19:20, Obeilskzexal
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?
Answers: 1
Physics, 22.06.2019 00:20, glogaming16
In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.
Answers: 2
A baseball is thrown from a platform 10 meters above the origin (so its position in the xy-plane is...
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