nov 20

1. A force of 20 N acts upon a 5 kg block. Calculate the acceleration of the object. 2. An object of mass 300 kg is observed to accelerate at the rate of 4 m/s2. Calculate the force required to produce this acceleration. 3. A 5 kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N opposing the motion. Calculate the acceleration of the object. 4. An object of mass 30 kg is in free fall in a vacuum where there is no air resistance. Determine the acceleration of the object. 5. An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50 newtons. a. Determine the net force acting on the object by doing a free-body diagram with vectors….and b. calculate the acceleration of the object. 6. A student pushes on a crate with a force of 200 N directed to the right. What force does the crate exert on the student? 7. A force of 100 N is exerted on an object of mass 40 kg that is located on a sheet of perfectly smooth ice. a. Calculate the acceleration of the object. b. If a second object identical to the first object is placed on top of the first object, what acceleration would the 100 N force produce? 8. Just before opening her parachute a skydiver of mass 50 kg reaches terminal velocity. Calculate the force of air resistance. This means they go a constant velocity and acceleration is zero. 9. For a person who has a mass 60 kg, calculate the weight in Newtons and in pounds (find a conversion app).. 10. An object of mass 10 kg is accelerated upward at 3 m/s2. What force is required? If you have problems answering questions, call a friend to discuss it.