Example: A constant force is applied to an object, causing it to accelerate at 5 m/sz. What will the acceleration be if (a) the force is doubled? (b) The object's mass is doubled? (c) The force and the object's mass are both doubled? (d) The forced is doubled but the object's mass is halved? Example: A constant force of 10 N is applied to an object with mass 5.0 kg. (a) If the object starts from rest, how far will it move in 10 seconds? (b) What is the velocity at t=10 s? (c) If the force is stopped applying to the object after 10 seconds, How far will it move further for another 5 seconds? Example: 43 (page 80): What average net force is required to bring a 1500 kg car to rest from a speed of 100 km/h (east) within a distance of 55.0 m? Convert 100 km/h to 27.8 m/s Question: A book rests on a horizontal table. How many forces act on the book? Example 46 (page 85): A box of mass 10.0 kg is sitting on a horizontal table. (a) what is the normal force acting on the box? (b) If you push the box with a downward force of 40.0 N, what is the normal force acting on the box? (c) If a string (attached to the top ofthe box) pulls the box upward with a tension force of 40.0 N, what is the normal force (acting on the box)