What is the magnitude of the momentum of a 25 qg sparrow fying with a speed of 8

Question

What is the magnitude of the momentum of a 25 qg sparrow fying with a speed of 8 6 ms kg·m/s PM 2. / points 23) A wheel accelerates with a constant angular acceleration of 4.1s hrough what angle does the wheel turn in the first 2.0 s, and (b) what is its angular speed at that un rad/s2 from an initial anqular speer 3. 0/4 points A rotating merry go-round makes one complete revolution in 4.1 s (a) What is the linear speed of a child seated 0.8 m from the center? (b) What is her acceleration (give components)? tangential acceleration radial acceleration m/s m/s2 m/s2 Select 0/2 points A uniferm meter stick with a mass of 260 g is supported horizontally by t

Explanation / Answer

angular speed w = number of revolution/time = 2pi/4.1 = 1.53 rad/s

(a)

linear speed v = r*w = 0.8*1.53 = 1.224 m/s

(b)

acceleration

tangential aceleration atan = dv/dt

since speed is constant dv/dt = 0

tangential accelration atan = 0 <<<--------ANSWER

radial acceleration arad = v^2/r = 1.224^2/0.8 = 1.873 m/s^2 <<<--------ANSWER

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