In the system drawn on the right, m_1 = 2.0 kg sits on a lab table which is 110 cm tall. m_2 = 1.0 kg is hanging over a pulley and is initially at rest 60.0 cm above the floor. The system is released. Determine the speed of m_2 just before it hits the floor. (solve with work-energy ideas, considering the system) a) solve the problem assuming the table is frictionless.
b) coefficient of friction is .2 between m1 and the table

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted