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A 100 kg car travelling at 20 m/s collides with a 100 kg car traveling at 8 m/s in opposite direction, a) if the two cars stick together , what is their final velocity ? b) how much kinetic energy is lost ? c) What percentage of the original kinetic energy of this ?
A frictionless plane is 10.0 m long and inclined at 34.0°. A sled starts at the bottom with an initial speed of 5.90 m/s up the incline. Determine the initial speed of the second sled
A snowman is made of three spheres of radii R,2R,3R with the largest sphere on the bottom and the smallest sphere on top. Find the center of mass of the snowman
a stone is dropped from the roof of a building; 1.20 seconds after that, a second stone is thrown straight down with an initial speed of 22m/s, What are the speeds of the two stones just before they hit the ground
A particle is launched in a gravitational field (g) with an initial velocity of v nought at an angle of theta with respect to the horizontal, Write down the equations for displacements along x- and along the y- axis as a function of time (t)
A box rests on a frozen pond, which serves as a frictionless horizontal surface. what is the mass of the box
Show that the transformation of the horizontal pressure gradient force from z to isentropic (potential temperature ? ) coordinates is given by 1 z p M ? ? ? =? , where p M = c T +? is the socalled Montgomery streamfunction.
A flashlight on the bottom of a 3.60 m deep swimming pool sends a ray upward, What angle (in air) does the emerging ray make withthe water's surface
Visible light passes through a diffraction grating that has 900 slits per centimeter, What is the difference between these wavelengths
Three successive resonance frequencies of an air column are 75, 125, and 175 Hz, What is the fundamental (lowest) frequency
A 0.300 kg} glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s} when it makes a head-on collision with a stationary 0.150kg} glider. Find the final kinetic energy of first glider.
question a ray of light in air strikes a glass plate n 1.50 at an incidence angle of 500. determine the angles of the
you kick a soccer ball 15 meters without hurting your foot much. you then pump the ball up until it is really hard the
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