Figure Two crates, of mass m = 63 kg and m2 = 131 kg, are in contact and at rest on a horizontal surface. Force F = 650 N is exerted on the 63-kg crate. The coefficient of kinetic friction is 0.18. (Figure 1) Part A Determine the acceleration of the system. Express your answer to two significant figures and include the appropriate units. F m1 m2 1 of 1 a = 2.7 Submit A m S Previous Answers Request Answer Incorrect; Try Again; 2 attempts remaining Part B Determine the magnitude of the force that each crate exerts on the other. Express your answer to two significant figures and include the appropriate units. ? Fc = Value Units Submit Request Answer Part C If the crates are reversed, determine the acceleration of the system. Express your answer to two significant figures and include the appropriate units. ar = Value Submit Request Answer Part D ? Units If the crates are reversed, determine the magnitude of the force that each crate exerts on the other. Express your answer to two significant figures and include the appropriate units.