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The amount of air resistance depends on the speed of a falling object and
1. the mass of the object
2. gravitational pull of the Earth
3. the time of day the object is falling
4. amount of surface area of the object
When you are at home, turning off a light usually does not turn off your T.V. This is because
1. most electrical devices in a house are on parallel circuits
2. most electrical devices in a house are on series circuits
3. they have different sources of voltage
4. a T.V. does not require electricity
You accidentally drop a permanent magnet on the floor during science lab. Which of the following would be most likely occur?
1. The magnetism may weaken.
2. The magnetism may strengthen.
3. The magnet may reverse its poles.
Newton's Second Law of Motion explains the relationship between
1. mass, force, and velocity
2. mass, force, and acceleration
3. mass, acceleration, and static force
4. velocity, force, and air resistance
The weight of an object
1. stays the same wherever the object is
2. changes if the object is in motion
3. stays the same as long as the object is in motion
4. changes if the force of gravity changes
Newton's Third Law gets help from the first two laws. Which aspects from those laws are necessary to help explain Newton's Third Law of Motion? (Check off all answers that apply)
1. An object in motion tends to stay in motion
2. An object at rest tends to stay at rest
3. Force equals mass times acceleration
4. The greater the mass is, the greater the force necessary to accelerate that mass is
5. The acceleration of an object is parallel and directly proportional to the force created
6. For every action, there is an equal and opposite reaction