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Name Date Period Forces Practice Problems 1. What force is required to accelerate a 5 kg mass from rest to 35 m/s in 1.75 s? 2. If a 13 kg bowling ball is thrown down the alley with a force of 95 N... a. What is the acceleration of the ball? b. If the ball starts at rest and travels down the alley in 3 s, what is the velocity of the ball just before impact with the pins? 3. Determine the weight of a 52.5 kg man. 4. A car with a mass of 1900 kg starts from rest and accelerates uniformly at a rate of 6.0 m/s/s. What is the force acting on the car during this time? 5. How much force would be required to slow a 4500 kg car from 45 m/s to 27 m/s in 3.5 seconds? 6. A force of 20 N acts upon a 5 kg block. Calculate the acceleration of the object. 7. 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. 8. 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. 9. 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. 10. An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50 newtons. Determine the net force acting on the object and acceleration. 11. A student pushes on a crate with a force of 100 N directed to the right. What force does the crate exert on the student? 12. A force of 200 N is exerted on an object of mass 40 kg that is located on a sheet of perfectly smooth ice. Calculate the acceleration of the object. 13. Just before opening her parachute a skydiver of mass 50 kg reaches terminal velocity. Calculate the force of air resistance. 14. For a person who has a mass 60 kg, calculate the weight in newtons and in pounds. 15. An object of mass 10 kg is accelerated upward at 2 m/s2. What force is required?