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1. A 0.11 kg bullet traveling at 1565 mph hits a 6.3 kg block of wood and stays in the wood. What is the velocity (speed) of the wood block immediately after the bullet hits it?
2. An aircraft with a weight of 8387 N accelerates from 0 to 100 m/s in 7.9 seconds, at which time the aircraft launches. What is the kinetic energy of the aircraft when the aircraft launches?
3. It takes an elevator 2.6 minutes to raise a vehicle with a weight of 4161 N from the floor to a height of 6 meters. What size (power) motor (in watts) does it take to do the job? Hint: this is a multiple step problem in which you must derive the variables needed to solve for problem in step one and then apply those values to the final solution of the problem. Watch your units.
A 120g cue ball moving at 0.35m/s strikes a stationary target ball with the same mass. Find the system's center-of-mass velocity before the collision
A dragster drives a quarter mile (402 m) at a constant rate of acceleration, starting from rest and finishing the race at a final speed of 450 km/hr. what average power was developed by the engine
A hollow cylinder (hoop) is rolling on ahorizontal surface at speed v = 4.8 m/s when it reaches a12° incline. How long will it be on the incline before it arrives back atthe bottom
a 8 kg brick moves along an x axis. its acceleration as a function of its position is shown below. what is the net work
When you press one of the buttons on a small calculator, a 3.5 v battery provides a small constant current of 60μA for 300 ms. Calculate the electrical potential energy U produced by the battery
a cat stuck up a tree and has 500 j gravitational potential energy. it then falls. find the kinetic energy of the cat
One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the first one, How many seconds later should the second snowball be thrown after the first to arrive at the same time
A block of mass m1 = 3 kilogram is sliding across a frictionless table at a speed of v1 = 3 m/s. Obtain the maximum energy lost in the collision
You ski straight down a 43.4° slope, starting from rest and traveling a distance of 10.3 m along the slope. Find your final velocity
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
Assume the electric force on a proton due to some source charge q is F. Now assume we increase the distance between the proton and q by a factor of 4. Determine the force on the proton
A solid piece of lead has a mass of 29.18 g and a volume of 2.60 cm3. From these data, calculate the density of lead
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