Suppose that a 30 N force and a 20 N force act on an object. What is the resultant force when these two forces act in opposite directions? 2- A man with a mass of 100 kg slides down a vertical pole at a constant speed. Using the following equation, evaluate the force of friction provided by the pole: ΣF = 0 3- A vehicle changes its velocity from 90 km/h to a dead stop in 10 seconds. What is the vehicle’s acceleration, using this formula: Acceleration = (Change in Velocity) / (Time Interval)? (Hint: the vehicle decelerates at 2.5 km/h X s) 4- Consider a pair of forces, one with a magnitude of 25 N and the other with a magnitude of 15 N. What maximum net force is possible for these two forces? 5- Consider a pair of forces, one with a magnitude of 25 N and the other with a magnitude of 15 N. What is the minimum
1- Suppose that a 30 N force and a 20 N force act on an object. What is the resultant force when these two forces act in opposite directions?
2- A man with a mass of 100 kg slides down a vertical pole at a constant speed. Using the following equation, evaluate the
3- A vehicle changes its velocity from 90 km/h to a dead stop in 10 seconds. What is the vehicle’s acceleration, using this formula: Acceleration = (Change in Velocity) / (Time Interval)? (Hint: the vehicle decelerates at 2.5 km/h X s)
4- Consider a pair of forces, one with a magnitude of 25 N and the other with a magnitude of 15 N. What maximum net force is possible for these two forces?
5- Consider a pair of forces, one with a magnitude of 25 N and the other with a magnitude of 15 N. What is the minimum net force possible?
6- A 400 kg lion grasping a vertical tree slides down at a constant velocity. What is the friction force of the tree? (Hint: Constant velocity means zero acceleration, and therefore zero net force)
7- If you push a 20 N horizontal force on a 2 kg mass resting on a horizontal surface, and the horizontal frictional force is 12 N, what is the acceleration?
8- True or False: According to
9- A cylindrical piece of copper has a mass of 100 g, a diameter of 3 mm, and a density of 8933 kg/m3. Find the length of the copper cylinder.
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