Calculate the normal force of an 8 kg object pushing up from the table

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

The material that keeps its new shape after it is stretched is called?

Arrange the images in order to show how lake-effect snow occurs.