Atrain with a mass of 25000 kg increases it’s speed from 10 m/s to 25 m/s in 20 seconds. assume that the acceleration is constant and that you can neglect friction
what is the acceleration of the train

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest