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A double-decker bus is traveling at 10 m/s. A child in the bus throws a ball horizontally out of the window from a height of 5 m above ground level, with a velocity of 5 m/s in the direction perpendicular to the side of the bus. With what speed does the ball hit the ground (measured relative to the ground), in m/s?
A hoop rolls without slipping down a ramp that is inclined at 35 degrees above the horizontal. Calculate the length of the ramp
A ball on the end of a string is whirled around in a horizontal circle of radius 0.300 m. The plane of the circle is 1.10 m above the ground. Find the radial acceleration of the ball during its circular motion
A ball with a mass of 0.580 is initially at rest. It is struck by a second ball having a mass of 0.415 , initially moving with a velocity of 0.260 toward the right along the axis. What is the change in the total kinetic energy of the two balls
A 4.20–kg block is set into motion up an inclined plane with an initial speed of vi = 7.40 m/s (see figure below). The block comes to rest after traveling d = 3.00 m along the plane, which is inclined at an angle of ? = 30.0° to the horizontal.
A cat runs along a straight line (the x-axis) from point A to point B to point C. The distance between points A and C is 5.00 m, distance between points B and C is 10.0 m, and the positive direction of x axis points to the right. The time to run f..
An object of mass M = 3.5 kg slides from rest a distance d = 6 m down a frictionless inclined plane where it encounters a spring. When the block just touches the spring, how much gravitational potential energy has it lost
The average distance of the planet Mercury from the sun is 0.39 times the average distance of the earth from the sun
A plane heads due north while a crosswind blows west. The plane's resultant velocity is 620 km/h, 22° west of north. What is the velocity of the wind
A 15kg block is at the top of a smooth incline that is 20 degrees with respect to the horizontal and is 75 m in length. How far down the incline did it slide
A house has well-insulated walls. It contains a volume of 75 m3 of air at 295 K. (a) Consider heating it at constant pressure. Calculate the energy required to increase the temperature of this diatomic ideal gas by 2°C. kJ (b) If this energy could be..
What force must be applied to 5kg object to move it downward with acceleration 1 m/s^2. What is the direction of the applied force.
Two sources have sound levels of 104dB and 62.3 dB. what is their combined intensity
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