A ball is released from rest at position 1. The diagram shows the ball in four positions as it rolls along a track from left to right. In which position does the ball have its minimum gravitational potential energy and maximum kinetic energy? A) 1 в) 2 3 E) 5

Suppose the pendulum bob in the figure(Figure 1) has a mass of 0.35 kg and is moving to the right at point B with a speed of 2.7 m/s a) What is the change in the system's gravitational potential energy when the bob reaches point A? b) What is the speed of the bob at point A? If the mass of the bob is increased, does your answer to part (a) increase, decrease, or stay the same? Explain. If the mass of the bob is increased, does your answer to part (b) increase, decrease, or stay the same? 1.2 m

Calculate Kinetic Energy, Potential Energy, Rest Energy and Work using the following information. Force = 500,000 cN %3D Mass = 200,000 g Speed (velocity) = 5 m/s %D Height = 1500 mm %3D Distance = 3 miles (1 mile = 1.6 km) %3D %3D We also know that acceleration of gravity, g = 10 m/s^2 and %3D speed of light, c = 3 x 10^8 m/s. First do all necessary unit changes for all the above quantities and then show all work to calculate Work, KE, PE and RE. BIU A Paragraph + v II II II II II II II II II II II II II II II II II II II II lili II II II II II II II II

C7 19.) You reach out the second story window, which is 5 m above the sidewalk, and throw a 0.5 kg ball straight upward with 2 J of kinetic energy. (a) What is the ball's gravitational potential energy when it is released?__________________________ J(b) What is the ball's gravitational potential energy just before hitting the sidewalk?___________________________ J(c) What is the ball's kinetic energy just before hitting the sidewalk?___________________________ J   (d) How would the answer to part c change if the ball had initially been thrown straight down with 2 J of kinetic energy? A.) stay the same B.) decrease     C.) increase

A physics student ties a ball with a mass 0.30kg to a string which can exert a maximum force of 41 N without breaking. The student swings the ball in a circle with a radius of 0.91 m, slowly increasing the speed until the string breaks. The circle is oriented vertically so that the ball moves up and down while traveling in a circle. What is the speed of the ball as the string breaks?

Calculate the gravitational potential energy of a 8.9-kg mass on the surface of the Earth. Express your answer using two significant figures. Calculate the gravitational potential energy of a 8.9-kg mass at an altitude of 410 km. Express your answer using two significant figures.

A cart is sliding along a frictionless track. It is moving with a speed of 10 m/s at position A on the track shown in the figure. What is the speed of the bead at point C?