Physics, 22.02.2021 14:10 freedygotmoney
a model rocket is made up of a shuttle of mass 20kg, and a fuel tank which has a mass of 4kg when it is empty. when the rocket attains an upwards velocity of 10m. per sec .all of its fuel is used up. At this point ,the empty tank is fired velocity to 13m. per sec .calculate the change in momentum of the rocket without empty fuel tank (60m. per sec upwards)​
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Physics, 22.06.2019 03:00
Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.
Answers: 1
Physics, 22.06.2019 05:00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
Answers: 1
a model rocket is made up of a shuttle of mass 20kg, and a fuel tank which has a mass of 4kg when it...
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