Plz, fat contains how many calories per gram? a. 22 b. 4 c.9 what is the main source of rapidly available energy to an athlete? and as what form is it stored in the body? a. "carbohydrates, glycogen" b. "fats, glycogen" c. "protein, amino acids"

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply