1. [-/2 Points] DETAILS SERPSE10 5.4.OP.002. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER (a) A 800 kg van is traveling at a constant speed of 1.33 m/s due north. What is the total force (in N) on the vehicle? (Assume north is the positive direction. Indicate the direction with the sign of your answer.) (b) What is the total force on the van (in N) if it is moving due south? (Assume north is the positive direction. Indicate the direction with the sign of your answer.) Need Help? Read It 2. [-/2 Points] DETAILS SERPSE10 5.4.OP.005. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A force F applied to an object of mass m, produces an acceleration of 3.30 m/s. The same force applied to a second object of mass my produces an acceleration of 1.10 m/s. (a) What is the value of the ratio m,/m2? (b) If m, and my are combined into one object, find its acceleration under the action of the force F. m / s 2 Need Help? Read it Watch It 3. [-/3 Points] DETAILS SERPSE10 5.4.P.003. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A 7.00-kg object undergoes an acceleration given by a = (6.00 i + 7.00 j) m/s2. (a) Find the resultant force acting on the object. EF = (C i + (b) Find the magnitude of the resultant force. FI = Need Help? Read it Watch It 4. [-/1 Points] DETAILS SERPSE10 5.4.P.008. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER If a single constant force acts on an object that moves on a straight line, the object's velocity is a linear function of time. The equation = ; + at gives its velocity v as a function of time, where a is its constant acceleration. What if velocity is instead a linear function of position? Assume that as a particular object moves through a resistive medium, its speed decreases as described by the equation = ; - KI, where k is a constant coefficient and x is the position of the object. Find the law describing the total force acting on this object. (Enter an expression for the magnitude of the total force. Use the following as necessary: m, k, and V. ) Need Help? Read It