11 años antes de su muerte la edad del doctor jose gregorio hernandez era 6 veses la edad de su primo juan .al momento de morir su edad es igual al triple de la edad del primo , calcula la edad del doctor al momento de morir ​

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

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.)