University:
Iowa State University
Course:
PHYS 132 | General Physics II
Academic year:

2023
Views:

388

Pages:

2
Author:

Kontinenz5r96q

Conceptual Physics Chapter 4 Test Review With Answer: Answers are below the question 1. A car is being towed on a very icy road; which makes the tow truck’s job towing the car very easy. You can say between the car’s wheels and the ice, it’s frictionless. The car being towed has a mass of 731803.65 dag. The tow truck while towing the car accelerated at a rate of 16.33 km/h . The car was towed 67.45m. 2 a). How much force is the tow truck applying? 33223.89N b). How much time was the car towed? 5.45s 2. A steel block with a mass of 6.29kg is being pushed and pulled. It is being pulled west at 210.98N and pushed north at 567.267N. Unfortunately, not all of the forces from being pulled and pushed are actually “moving” the steel block. This difference is due to the friction force of 42.58 kg m/s . . 2 a). What is the net force being applied to the steel block? 551.05N, 72.21 North of West o b). What is the acceleration of the steel block and in what direction? 87.61m/s , 72.21 North of West 2 o c). After moving with its acceleration for 34.78s, what is its final velocity? 3046.98m/s d). How far has the steel block traveled in 34.78s? 52988.65m 3. Two kids are fighting over a chair by pushing the chair towards the other. Both kids want the chair! All the mother could hear echoing through the house is, “No! It’s mine!” Tommy-Newton’s 1 Law, yelled at his brother. “No!!! It’s mine!” Sir Isaac Newton’s 2 Law, barked at his brother. Tommy-Newton pushed the chair with an acceleration of 2.67m/s and Sir Isaac responded with an acceleration of 4.78m/s . The chair isn’t too big for the kids to move. Its weight only has a magnitude of 40.61N, which creates a F of 9.61N. They fought over the chair for 7.98s until the mother came in a broke up the fight. st 2 nd 2 F a). What is the net force being applied to the chair? -8.74N, Left b). How far did the kids move the chair? -67.22m 4. Jimmy is trying to hold a rock above his head. The rock has mass of 6798.45g. a). How much force must Jimmy apply to the rock be able to hold it above his head (equilibrium)? 66.69N 5. A rocket has a mass of 10511.22 kg. The rocket scientists need the rocket to accelerate at a rate of 5.91 m/s to be able to break out of Earth’s atmosphere. 2 a). How much force must the rocket engines produce to achieve this acceleration? 165236.38N 6. Two zookeepers are attempting to get an elephant into its cage by pulling the elephant with their trucks. The zookeepers are lining up the elephant’s cage with what they are predicting to be the path the elephant will take when they apply force to the elephant. But the zookeepers need your help to do this. Zookeeper #1 is pulling with a force of 10561.82N, south. Zookeeper #2 is pulling with a force of 7492.65N, east. The elephant has a mass of 50621.00kg and is applying a F =5428.69N. The zookeepers will pull the elephant for 1 ¾ minutes. F a). How far away should the cage be placed? 606.38m b). What angle should the cage be placed? 68.10 South of East o

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