Part A = 1.84 m

Part B = 1.55 m

If your speed is 3.00 m/s when you start to slide, what distance will you slide before stopping?

If her mass is 20.0 kg, what distance d does she slide (i.e., how far does she move after the push ends)? Remember that the friction force is acting anytime that she is moving?

Part A = 0.26 s

If the string is 9.5 m long, has a mass of 55 g and is pulled taut with a tension of 7.5 N, how much time does it take for a wave to travel from one end of the string to the other?

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Part A = 4.26 * 10^37 kg

Part B = 2.14 * 10^7

Part C = no

Part D = 6.31 * 10^10 m

Part E = yes

Determine the mass of the massive object at the center of the Milky Way galaxy.

Express your answer in solar masses instead of kilograms, where one solar mass is equal to the mass of the sun, which is 1.99 * 10^30 kg.

Observations of stars, as well as theories of the structure of stars, suggest that it is impossible for a single star to have a mass of more than about 50 solar masses. Can this massive object be a single, ordinary star?

Many astronomers believe that the massive object at the center of the Milky Way galaxy is a black hole. If so, what is its Schwarzschild radius R_{s}?

Would a black hole of this size fit inside the earth’s orbit around the sun? The mean distance from the sun to the earth is 1.5 * 10^11 m.

Part A = 6.72 cm/s

Part B = 11.0 cm/s

If Olaf catches the ball, with what speed v_{f} do Olaf and the ball move afterward?

If the ball hits Olaf and bounces off his chest horizontally at 7.40 m/s in the opposite direction, what is his speed after the collision?

Part A = θ_{f} = θ_{i}

Part B = F = 2mv_{i}sin(θ_{f})/(Δt)

What is the final angle θ_{f} that the ball’s velocity vector makes with the negative y axis?

What is the magnitude F of the average force exerted on the ball?