The distance s (in latex: m m ) above the ground for a projectile fired vertically upward with a velocity of 4latex: \left[a\right] [ a ] latex: m/s m / s as a function of time t (in latex: s s ) is given bylatex: s=4\left[a\right]t-4.\left[b\right] t^2 s = 4 [ a ] t − 4. [ b ] t 2 . your instructor will provide you with a and b. find the answers to these questions. find latex: t t for latex: v=0 v = 0 find latex: v v for latex: t=4 t = 4 find latex: v v for latex: t=5 t = 5 what conclusions can you draw?

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?