Physics, 15.06.2021 04:30 marivi3cazares
một vật có khối lượng là 30kg bắt đầu chuyển động nhanh dần đều và sau khi đi được 20cm thì có vận tcs 6km/h lực tác dụng vào là
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Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative
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Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block
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một vật có khối lượng là 30kg bắt đầu chuyển động nhanh dần đều và sau khi đi được 20cm thì có vận t...
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