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A 30 kilogram child moving at 4 meters per second jumps onto a 50 kilogram sled that is initially at rest on a long, frictionless, horizontal sheet of ice determine the speed of the child sled system after the child jumps into the sled.
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A baseball is thrown vertically upward at a speed of 39.2 m/s. How much time elapsed before it reaches it highest points, and how high above the ground does it get?
Question: A projectile is launched at an angle of 30 deg.Is there any point on the trajectory where V and A are parallel to each other? Is there any point where V and A are perpendicular to each other? The response must ...
Question: A spring of negligible mass has force constant k = 1500N/m . Part (a): How far must the spring be compressed for an amount 3.40J of potential energy to be stored in it Part(b): You place the spring vertically w ...
Question: A 30.0kg- box is being pulled across a carpeted floor by a horizontal force of 230N, against a friction force of 210N. What is the acceleration of the box? How far would the box move in 3s, if it starts from re ...
Initially (at time t = 0) a particle is moving vertically at 5 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.6 m/s2. At what time will the particle be traveling at 57? with respect to the horizontal? Th ...
Question: A pendulum is made by tying a 520g ball to a 46.0cm -long string. The pendulum is pulled 21.0?to one side, then released. A) What is the ball's speed at the lowest point of its trajectory? B) To what angle does ...
Question: Suppose the free-fall acceleration at some location on earth was exactly 9.8000 m/s^2. What would it be at the top of a 1000 -tall tower at this location? The response must be typed, single spaced, must be in t ...
Question: Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. The leaf of a corn plant has a resistance of 2.3 MΩ measured between two electrodes placed 20 cm apart ...
Question: What potential difference is needed to accelerate a He+ ion (charge +e, mass 4u) from rest to a speed of 1.8 x 10 6 m/s? Express your answer using two significant figures. The response must be typed, single spa ...
Question: In a physics laboratory experiment, a coil with 180 turns enclosing an area of 13.5 cm^2 is rotated during the time interval 5.00Ã-10-2 s from a position in which its plane is perpendicular to Earth's magnetic ...
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