Emma runs around the track. she has a constant speed of 5m/s at the beginning of the track as well as 5m/s near of the track. did emma accelerate during her runs? explain.

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?