Jack was playing with a toy car and a track that records velocity over time using sensors and it generated the graph below: At which points on the graph is the car showing acceleration?

Group of answer choices

Sections a, c, and d

Sections a, b, c, and d

Sections a and d

Section a only

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays