Given the displacement vectors A = (8.00 î − 9.00 ĵ + 5.00 ) m and B = (7.00 î + 5.00 ĵ − 3.00 ) m,
find the magnitudes of the following vectors and express each in terms of its rectangular components.
A) C = + || = m = ( î + ĵ + ) m
B) D = 2 - || = m = ( î + ĵ + ) m

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

Based on this activity, is kinetic energy always transformed into potential energy?