A2kg particle moving along the x-axis experiences the net force shown at right. the particle’s velocity is 3.0m/s at x = 0m. a) at what position is the particle moving the fastest? b) what is the particle’s velocity at x=8m? show your work

Asample of a gaseous substance changes into a liquid

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

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.)