A crate of mass 25 kg moving with a speed of 3 ms on a tough horizontal floor is brought to rest after sliding a distance of 2.5 m on the floor. The coefficient of sliding friction between the crate and the floor is A. 0.25 B. 0.40 C. 0.50 D. 080

Argon, neon, and xenon are examples of

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.