Physics, 29.06.2019 16:30 emmacox069
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. the first child exerts a force of 75.0 n, the second a force of 90.0 n, friction is 12.0 n, and the mass of the third child plus wagon is 23.0 kg. (a) what is the system of interest if the acceleration of the child in the wagon is to be calculated? (b) draw a free-body diagram, including all forces acting on the system. (c) calculate the acceleration. (d) what would the acceleration be if friction were 15.0 n?
Answers: 1
Physics, 22.06.2019 20:40
Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.
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Physics, 23.06.2019 03:00
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Physics, 23.06.2019 07:00
Why does an object have a different weight o the moon than it does on earth
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Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wa...
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