An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. what is the (constant) acceleration of the vehicle during this time?
question 13 options:
1) 8.0 m/s
2) 9.6 m/s
3) 12 m/s
4) 6.9 m/s
5) 0.20 m/s

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?