Speeding truck slams on the brakes and accelerates at -7.40m/s^2 Before coming to a stop. It leaves skid marks on the pavement that are 43.1m long. How fast was the truck going before it slammed on the breaks?

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

Which notation is used to represent an alpha particle? a. b. c. d.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2