URGENT 50 points available: A rock falls off a cliff. After falling for 3.5 seconds, what is its speed a) 0.35 m/s b) 15.7 m/s c) 55 m/s d) 35 m/s​

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

Acar travels 40m in 8 seconds find the car speed