PRACTICE PROBLEMS
1) A 10 N force is acting on a stationary object on a frictionless horizontal plane for 2 seconds. What will the object's velocity be after 4 seconds if the object has a mass of 2 kg ?
2) A constant force is acted upon an object, m1, and it brings the object's acceleration to 2 m/s2. When the same force is acted upon another object, m2, the acceleration of it becomes 3 m/s2. If this force is acted upon m1 + m2, what would the acceleration of the new object be ?
3) A 2 kg object is being pushed with a 10 N force that makes a 370 angle with the ground. What is the horizontal acceleration of the object if the frictional force acting on it is 5.2 N ?
4) In the diagram below, the horizontal plane is frictionless. What is the tension (T) between objects, m1 and m2 ?
5) In the diagram below, the horizontal plane is frictionless. What is the backward force of m2 on m1 ?
6) The force F1 is acted upon a stationary object, m, for t seconds. During this time, the object's displacement is X meters. The force F2 is acted upon the same stationary object for 2t seconds. The object's displacement during this time is 2X meters. What is F1/F2 ?
