Physics, 16.10.2019 02:10 FailingstudentXD
You throw a ball of mass 1 kg straight up. you observe that it takes 2.2 s to go up and down, returning to your hand. assuming we can neglect air resistance, the time it takes to go up to the top is half the total time, 1.1 s. note that at the top the momentum is momentarily zero, as it changes from heading upward to heading downward.(a) use the momentum principle to determine the speed that the ball had just after it left your hand. vinitial = ? ? m/s(b) use the energy principle to determine the maximum height above your hand reached by the ball. h = ? ? m
Answers: 1
Physics, 22.06.2019 05:30, dxpebetty64
Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
Answers: 2
Physics, 23.06.2019 01:30, ramanpreet
Which statements did both aristotle and ptolemy assume? check all that apply.
Answers: 1
You throw a ball of mass 1 kg straight up. you observe that it takes 2.2 s to go up and down, return...
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