Atruck tire rotates at an initial angular speed of 21.5 rad/s. the driver steadily accelerates, and after 3.50 s the tire's angular speed is 28.0 rad/s. what is the tire's angular acceleration (in rad/s2) during this time?

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° 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.)

Who was the first scientist to measure speed as distance over time?

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia