Aconstant unbalanced force of 2.5 n causes an apple to accelerate at a rate of 10 meters per second squared, downward. find the mass of the apple by completing the three parts of the problem below. newton’s second law of motion can be stated mathematically as force = m x a. that is, force equals mass times acceleration. 1.this equation can be rearranged in two other ways when it is solved for mass or acceleration. using algebra (or the “triangle” method), first rearrange the equation so it is solved for mass. 2.then, solve the problem by plugging in the correct numbers and units. 3.next, calculate an answer. also, be sure to use the correct unit in your answer.

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Select all the correct answers. which two statements are true? a moving magnetic field creates an electric field. a constant magnetic field creates an electric field. a constant electric field creates a magnetic field. a moving electric field creates a magnetic field. resetnext

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light