What is the kinetic energy of the object at point P₂? A)0.27 J B)0.71 J C)0.98 J D)1.25 J E)none of the above

Question

Quizplus · Accepted Answer

According to the conservation of energy, the initial potential energy at point P is equal to the final kinetic energy at point B. Therefore, we can calculate the kinetic energy at point B using the formula: KE = PE(initial) - PE(final) 
PE(initial) = mgh = (0.3 kg)(9.81 m/s^2)(0.6 m) = 1.764 J 
PE(final) = 0 J (at point B, the object is at ground level) 
KE = 1.764 J - 1.05 J = 0.714 J ≈ 0.71 J (rounded to two decimal places) 
Thus, the correct answer is B.

What Is the Kinetic Energy of the Object at Point