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The figure is a graph of the gravitational potential energy and kinetic energy of a 70 g yo-yo as it moves up and down on its string. The acceleration of gravity is 9.81 m/s2 . a) By what amount does the mechanical energy of the yo-yo change after 6.0 s? Answer in units of J. b) What is the speed of the yo-yo after 4.5 s? Answer in units of m/s. c) What is the maximum height of the yo-yo?...
2) As the block slides down, its potential energy converts into kinetic energy. If its initial velocity is 1.2 m/s (at x = 3 m), determine its velocity, v, at x = 0.8 m. Your answer must include 2 places after the decimal point and the proper unit. Take g = 9.81 m/s2. v = 1 m/s y = 0.25x? k = 5 kN/m buwiel X 3 m
2) As the block slides down, its potential energy converts into kinetic energy. If its initial velocity is 1.2 m/s (at x = 3 m), determine its velocity, v, at x = 0.8 m. Your answer must include 2 places after the decimal point and the proper unit. Take g = 9.81 m/s2. v = 1 m/s y = 0.25x? k = 5 kN/m buwiel X 3 m
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
Parallel Axis Theorem: I = ICM + Md Kinetic Energy: K = 2m202 Gravitational Potential Energy: AU = mgay Conservation of Mechanical Energy: 2 mv2 + u = žmo+ U Rotational Work: W = TO Rotational Power: P = TO Are Length (angle in radians, where 360º = 2a radians): S = re = wt (in general, not limited to constant acceleration) Tangential & angular speeds: V = ro Frequency & Period: Work-Energy Theorem (rotational): Weet = {102 - 10...