## When the speed of your car is doubled by what factor does its kinetic energy increase when the speed of your car is doubled by what factor does its kinetic energy increase 2 √ 2 4 8?

**Doubling** the velocity **increased** the **kinetic energy** by **4**.

## What happens to kinetic energy when speed is doubled?

The **kinetic energy** is proportional to the square of the **speed**, so **doubling** the **speed** increases the **kinetic energy** by a factor of 4.

## When a car’s speed is doubled its kinetic energy is?

**Kinetic energy** increases with the square of the **speed**. Neglecting friction, an engine does four times as much work to make a **car** reach a **speed** of 60 miles/h as to make it reach a **speed** of 30 miles/h. When the **speed** of a **car** is **doubled**, **its kinetic energy** increases by a factor of four.

## How much will the kinetic energy of a body increase if its speed is doubled?

1 Answer. **Kinetic energy of a body** depends on **its** mass and **its speed**. Hence,,**kinetic energy will** become 4 times the original **kinetic energy if** the **speed is doubled**.

## Which requires more work increasing a cars speed?

The **work** done is equivalent to energy. Therefore, the **work** can be compared to the kinetic energy. Since 109.89m J > 89.91m J, **more work** is **required** to **increase** the **car’s speed** from 50 mph to 60 mph.

## At what point does the ball have the greatest kinetic energy?

The velocity of the **ball** increases as it falls, which means that the **ball** attains its **greatest** velocity, and thus its **greatest kinetic energy**, at E. 19.

## What are the factors that affect kinetic energy?

1. Explain that there are two factors that affect how much kinetic energy a moving **object** will have: **mass** and **speed**.

## Which will have the greatest impact on kinetic energy?

Because kinetic energy is proportional to the **velocity** squared, increases in **velocity** will have an exponentially greater effect on translational kinetic energy. Doubling the **mass** of an object will only double its kinetic energy, but doubling the **velocity** of the object will quadruple its **velocity**.

## How does kinetic energy change with speed?

It turns out that an object’s **kinetic energy** increases as the square of its **speed**. A car moving 40 mph has four times as much **kinetic energy** as one moving 20 mph, while at 60 mph a car carries nine times as much **kinetic energy** as at 20 mph. Thus a modest **increase** in **speed** can cause a large **increase** in **kinetic energy**.

## What happens to a car’s kinetic energy if its speed triples?

**If** a **car’s speed** doubles, **its kinetic energy** increases by 4, **if its speed triples** then **the kinetic energy** increases by 9.

## How do you find the speed of kinetic energy?

In classical mechanics, **kinetic energy** (KE) is equal to half of an object’s mass (1/2*m) multiplied by the **velocity** squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a **velocity** of 5 meters per second (v = 5 m/s), the **kinetic energy** is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s^{2}.

## How do you find the maximum kinetic energy?

The **maximum kinetic energy** KE_{e} of ejected electrons (photoelectrons) is given by KE_{e} = hf − BE, where hf is the photon **energy** and BE is the binding **energy** (or work function) of the electron to the particular material.

## What happens to the kinetic energy of the body weighing 2 kg if the speed is doubled?

**If** you double the mass of an object, you double the **kinetic energy**. **If** you double the **speed** of an object, the **kinetic energy** increases by four times.

## What happens to the speed of a body when its kinetic energy is increased to four times the original kinetic energy?

If the **kinetic energy** of a **body** becomes **4 times** then what will be the percentage **increase** in **its** momentum. Therefore, when the **kinetic energy increases** by **four times**, then the moment will **increase** by two **times**.

## How will the momentum change if kinetic energy is doubled?

**If kinetic energy is doubled**, the **momentum** becomes, p′=2m(2K) =2 p.