A car being driven on a road experiences several forces—the force of friction due to the road and the air, and the force of the engine that pushes the car forward. Describe the car’s acceleration when the engine force equals the frictional force.

The net force is zero. According to Newton’s first law, the car will maintain a constant velocity.

There is a net force that will cause the car to accelerate backwards (slow down).

There is a net force that will cause the car to accelerate forward (speed up).

Quiz

Chemistry 20

j zed 7 questions

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1Write the symbol corresponding to the theoretical description of a substance that has 33 protons and 3 extra electrons.
1. A
2. B
3. C
4. D
2Write the symbol corresponding to the theoretical description of a substance that has 18 electrons and a net charge of 3+.
1. A
2. B
3. C
4. D
3Cesium, mercury, and radium are examples of
1. Ametals
2. Bnon-metals
3. Ccompounds
4. Dsemi-metals
4Neon, argon, and krypton are part of a group of elements called
1. Aalkaline-earth metals
2. Bnoble gases
3. Chalogens
4. Dalkali metals
5Thomson's key contribution to the study of the atom was
1. Agold foil experiment
2. Bbilliard ball model
3. Craisin bun model
4. Dconcept of energy levels
6What is the atomic mass of the element in the diagram?
1. A35.45
2. B42.69
3. C19.72
4. D28.01
7A car being driven on a road experiences several forces—the force of friction due to the road and the air, and the force of the engine that pushes the car forward. Describe the car’s acceleration when the engine force equals the frictional force.
1. AThe net force is zero. According to Newton’s first law, the car will maintain a constant velocity.
2. BThere is a net force that will cause the car to accelerate backwards (slow down).
3. CThere is a net force that will cause the car to accelerate forward (speed up).