Question

A car starts decelerating on applying brakes and stops after traveling 10m if breaking force is 3×10ki power 5 N calculate the amount of work done by the brakes.

Answer 1

Answer:

3×10⁶ joules is the required answer

Explanation:

Given:-

• Displacement of the car ,s = 10m
• Force applied on the car ,F = 3×10⁵ N

To Find:-

• Work Done ,W

Solution:-

According to the Question

It is given that car starts decelerating on applying brakes and stops after traveling 10m if breaking force is 3×10⁵N.

We have to calculate the work done by the brake .

As we know that work done is calculated by the product of force & displacement.

• W = Fs

where,

• W denote work done
• F denote Force
• s denote Force

Substitute the value we get

→ W = 10×3×10⁵

→ W = 3×10⁶ J

• Hence, the work done by the car is 3×10⁶ joules.

Answer 2

★ Required Answer ★

• The work done by the car is 3×10⁶ joules.

★ Given:-

• Displacement of the car  = 10m
• Force applied on the car = 3×10⁵ N

★ To find:-

• Work done

★ Solution:-

• ⇒ W = Fs
• ⇒ W = 10×3×10⁵
• ⇒ W = 3×10⁶ J

Therefore the work done by the car is 3×10⁶ joules.