It takes Miss Slotman 4 seconds to go from a speed of 3 m/s to a speed of 10 m/s. What is her acceleration?

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle

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

b. preoperational

just took it