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A wheel spinning at 25 rev/s is slowed to a stop by a constant acceleration while turning 50rev.
a) What is the magnitude of the constant acceleration?
b) How long did it take to stop?
A 2.00×104kg railroad car is rolling at 1.00m/swhen a 5000kg load of gravel is suddenly dropped in.What is the car's speed just after the gravel is loaded
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 3.30 m/s. What is her average speed over the entire trip?
A 1.20 brick is sliding next to on a rough horizontal surface at 15.0 .If the brick stops in 4.30, how much mechanical energy is lost?
Vector A has a magnitude of 9.10 units and makes an angle of 54.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following.
Find the equation for the acceleration of the moving body at any time.
Establish an average acceleration
what is the net workdone on the weights.A child slides down a hill on a toboggan with an acceleration of 1.8 m/s2. If she starts at rest, how far has she traveled after following lengths of time.
what is the bee's speed at once afterward.
what is the magnitude of the net force acting on ball.
A block is attached to a ceiling by a spring fo force constant k. When pulled down and released the block undergoes simple harmonic motion. The amplitude is 2, and the frequency is 1/(16pi). If the mass of the block is 3.14 kg, what is the spring ..
If the bullet has a mass of 21.0 g and a speed of 235 m/s, explain how high will the block rise into the air after the bullet becomes embedded in it?
Several vectors in the x-y plane are shown in the figure with their tails at the origin of the coordinate system and with a label at their heads
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