Brenda(45-kg) is sledding down a Roller Coaster at Six Flags Great America from three different heights(10m,5m,0m), calculate: a. Her PEKE and total energy E at point #1

car a and b are moving in opposite directions

plz mark.me the brainliest i rlly need this kind of yours in exchange

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it