Acceleration causes a shift of weight to the

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg