The common version of Newton’s second law of motion, EF= ma, is actually a special case that is true only when an objects _ is constant. -Mass
-Momentum
-Force
-Velocity

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

The car hoist allows the car to be driven onto the platform, after which the rear wheels are raised. if the loading from both rear wheels is 1380 lb, determine the force in the hydraulic cylinder ab. neglect the weight of the platform itself. member bcd is a right-angle bell crank pinned to the ramp at c. the force is positive if in tension, negative if in compression.

In positive numbers less than 1, the zeros between the decimal point and non zero are significant