Assume the elevator is moving upward at increasing speed. Rank the magnitude of the forces. Rank from largest to smallest. To rank items as equivalent, overlap them.
1. the force of the 3kg block on the 2kg block, F3on2
2. the force of the 2kg block on the 3kg block, F2on3
3. the force of the 3kg block on the 1kg block, F3on1
4. the force of the 1kg block on the 3kg block, F1on3
5. the force of the 2kg block on the 1kg block, F2on1
6. the force of the 1kg block on the 2kg block, F1on2
7. force of the 1kg block on the floor, F1onfloor
8. force of the floor on the 1kg block, Fflooron1

Aball is thrown upward. at a height of 10 meters above the ground, the ball has a potential energy of 50 joules (with the potential energy equal to zero at ground level) and is moving upward with a kinetic energy of 50 joules. what is the maximum height h reached by the ball? consider air friction to be negligible. 1. h ≈ 10 m 2. h ≈ 50 m 3. h ≈ 30 m 4. h ≈ 40 m 5. h ≈ 20 m 003 10.0 points which of the two object shown below has the greatest kinetic energy? a m b 1 2 m v 2v 1. kinetic energies are the same. 2. a 3. b 4. unable to determine. 004 10.0 points tim, with mass 74.6 kg, climbs a gymnasium rope a distance of 3.1 m. the acceleration of gravity is 9.8 m/s 2 . how much potential energy does tim gain? answer in units of j. 005 10.0 points a car is moving at 64 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when it moves at 111 miles per hour? answer in units of j. 006 10.0 points an 102 kg man climbs up a 1 m high flight of stairs. the acceleration of gravity is 9.81 m/s 2 . w

What practical value did astronomy offer to ancient civilizations?

Asimple electrochemical cell contains two electrodes? t or f