Which one of the following statements concerning kinetic energy is true? a the kinetic energy of an object always has a positive value. b the kinetic energy of an object is directly proportional to its speed. c the kinetic energy of an object is expressed in watts. d the kinetic energy of an object is a quantitative measure of its inertia. e the kinetic energy of an object is always equal to the object’s potential energy.
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Physics, 22.06.2019 05:30
Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
Answers: 2
Physics, 23.06.2019 17:30
Aman walks foward on a bus. to a stationary obserrver, the bus moves east at a speed of 13 m/s if the man moves 0.7 m/s east relative to the bus. what is his velocity in the frame of reference of a stationary observer?
Answers: 1
Which one of the following statements concerning kinetic energy is true? a the kinetic energy of an...
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