Q. A 151 kg car rounds a curve of radius 163 m at 46 m/s. The acceleration of gravity is 9.8 m/s2 . What force must the road exert on its tires to hold the car on course?
Q. A 7.0-kg rock is subject to a variable force given by the equation
F(x) = 6.0 N - (2.0 N/m)x + (6.0N/m2)x2.
If the rock initially is at rest at the origin, find out its speed when it has moved 9.0 m.Please provide step-by-step method to solving this problem. Thank you.