Question
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A 3.00g bullet traveling horizontally to the left at 400m/s hits a 3.00kg wooden block, which is initially travelling at 4.0m/s to the right on a frictionless horizontal table. The bullet buries itself in the block without passing through. What is the final velocity of the block+bullet? A sports car of mass 544kg is traveling north at 27.3m/s. It collides with a truck of mass 1814kg that is moving east at 20.5m/s. They collide and lock together. What is the velocity of the combined wreckage immediately after the collision? If the wreckage comes to a stop after sliding 16.7m, what is the coefficient of friction between the road and the wreckage? A hunter with a powerful rifle is hunting a monkey that is hanging initially motionless from a branch in a tree. The hunter knows that, at the moment the gun fires, the monkey will let go of the branch and drop straight to the ground. The mass of the monkey is mm = 100kg, the mass of the bullet is mb = 10g, the muzzle velocity (that is, the initial speed) of the bullet is v0 = 375m/s, the monkey is y0 = 3m above the ground, the man is x = 4m away from the base of the tree. Assuming he wants to hit the monkey, where should the hunter aim? Explain. (Convince me you understand the physics involved here!) (NOTE: This is a question about physics, not about the use or design of rifles.) A block is held in position by a cable along a frictionless incline. Find the tension as a function of theta and m (that is, write down an expression for T = T (theta,m)); comment on your result for theta = 0degree and theta = 90degree. If theta = 60degree and m = 50kg, find the tension in the cable and the normal force exerted by the incline.
Explanation / Answer
I need help with this quesiton A 3.00g bullet traveling horizontally to the left