Applications of Newton’s 2nd Law A 2.60 kg cart on a frictionless track is pulled by force of 3.78 N. What is the acceleration of the cart? 70 N 20 kg 190 N A 3.08 kg cart on a frictionless track is pulled by a string so that it accelerates at 2.56 m/s/s. What is the tension in the string? Applications of Newton’s 2nd Law 180 N 40 kg 20 N 70 N 20 kg 190 N A 20.78 N unbalanced force causes an object to accelerate at 1.05 m/s2. What is the mass of the object? An unbalanced force of 580 N is applied to a 75.98 kg object. What is the acceleration of the object?