An object (m=20kg) on a frictionless surface is pulled by two forces . F1=109N and the object accelerates right at 3.0 m/s^2. Find the value of f2 A. 40N B. 97N. C.. 103N D. 160 N E. 60 N 2. A person who weighs 800N steps onto a scale that is on the floor of an elevator car. If the elevator accelerates upward at a rate of 5.0 m/s. What will the scale read. A.800N B.1000N C. 400N D. 1200N E.1600 N On a distant planet , a block is allowed to accelerate down a rough u=0.2 ramp at an 0=18 degree angle. If it found to accelerate at 1.89 m/s^2 . What is the acceleration of gravity on the distant planet