For a safe training routine, you should choose weights that you can lift - times without injury. a. 1 - 2
b. 4 - 6
c. 8 - 12
d. 20 - 25

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

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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.