Physics, 08.03.2021 06:10 eguzmandpandoracom
Which of the following is true regarding an 8 kg bird flying at a height of 10 m with a velocity of 5 m/s? A: The total mechanical energy of the bird is 900 J. B:The kinetic energy of the bird is 100 J. C: The total mechanical energy is 884 J. D: The gravitational potential energy of the bird is 784 J. E: The gravitational potential energy of the bird is 800 J.
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Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.
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Physics, 22.06.2019 12:00
This is for my 8th grade science class, i really donβt understand. can someone me? , lol.
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