Launch from a ramp The figure shows a flat horizontal surface on the x-axis everywhere except x between 5 and 10 meters. For x between 5 and 10 meters, there is a straight ramp inclined at 30 degrees, and a vertical drop at x = 10 m that goes back to the x-axis. There is no friction. A B 30° 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 x (meters) • point A is the origin, An object travels from the left at 10 meters per second, passes point A, then goes up the ramp from point B to C, then becomes a projectile hitting the x-axis at point D. (Assume a smooth transition at x=5 from horizontal to ramp.) consider the points: D? point B is the point x = 5 point C is the top of the ramp point D is the point the object hits the x-axis after leaving the ramp Calculate the magnitude of the average velocity (m/s) from A to C. Enter number only. Calculate the magnitude of the average velocity (m/s) from C to D. Enter number only. Calculate the magnitude of the average velocity (m/s) from B to D. Enter number only. Calculate the magnitude of the average velocity (m/s) from A to D. Enter number

A 800 kg roller coaster goes over the first hill with a speed of 17.0 m/s.  If h = 58 m, determine the change in gravitational potential between A and B.  Use g = 10 N/kg.

5 of 18 A 4500 kg spacecraft is in a circular orbit 1500 km above the I Review I Constants surface of Mars (mM = 6.42 x 1023 kg, RM = 3.39 x 10 m). Part A How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4500 km above the surface? Express your answer with the appropriate units. HẢ ? w - 1.49 • 1010 J %3D Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback Next > MacBook Air esc 80 DII DD F1 F2 F3 F4 FS F6 F7 FB F9 F10 F11 F12 @ # $ & * 1 2 3 4 7 9. delete Q W E R T Y 一 P

⦁ Give an example of a situation in the real world where kinetic energy would need to be calculated (besides a roller coaster ride).