What is the average speed of a car that moves 570 m in 24 s a. 0.042 m/s b. 24 m/s c. 570 km/s d. 550 n e. 14000 m/s

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.

Electromagnetic force is present when electromagnetic fields a. become charged as they lose electrons. b. become stable as they come in contact with other forces. c. interact with charged particles. d. gain energy from other forces.