**cause an object to accelerate in a direction opposite to the unbalanced force **

**Explanation:**

An unbalanced force is defined as any force that causes an object to accelerate in a direction opposite to the unbalanced force.

The unbalanced force is the net or resultant force describe in newton's second law of motion.

In the first law, it is the external force that causes the motion of a body to change.

Unbalanced forces can cause body to either accelerate in the direction of the force or in an opposite direction of the force.

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Newton laws brainly.com/question/11411375

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**Answer:**

Energy by definition is the property of matter that involves interactions with molecules, in order to perform an action.

**Explanation:**

They're many different types of energy, a few of them are...

. Thermal energy

. Solar energy

. Chemical energy

. Kinetic energy

. Potential energy

. Mechanical energy to name a few...

All of these specific energies involve the interaction of molecules which are used for different things and can be converted from one type of energy to another.

Hope this helps.

**Answer:**

Car B has a mass of 800 kg.

**General Formulas and Concepts:**

<u>Momentum</u>

Law of Conservation of Momentum:

**Explanation:**

<u>Step 1: Define</u>

<em>Identify variables</em>

[Given] m₁ = 1200 kg

[Given] v₁i = 10 m/s

[Solve] m₂

[Given] v₂i = 0 m/s

[Given] vf = 6 m/s

<u>Step 2: Solve for m₂</u>

- Substitute in variables [Law of Conservation of Momentum]: (1200 kg)(10 m/s) + m₂(0 m/s) = (1200 kg + m₂)(6 m/s)
- Multiply: 12000 kg · m/s = (1200 kg + m₂)(6 m/s)
- Isolate m₂ term: 2000 kg = 1200 kg + m₂
- Isolate m₂: 800 kg = m₂

Answer: heat flows from the hot water to cold water

Explanation:

Heat transfer is taken place from higher temperature to lower temperature then hot water gives heat to the cold water. There are three methods of conduction , Those are Conduction , Convection and Radiation here the heat transfer is taken place from convection.

**Answer:**

the frequency of the wave increases