i have a school thing in edmentume but there are two things that show up to be tutorial only but i still have not been able to complete them even thogh i done the tutorial does anyone know anything about this please help me out

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.