Question

calculate thw work done by a car against in moving along a straight horizontal road the mass of the car is 400 kg and the distance moved is 2m​

Answer 1

$\huge{\underline{\underline{\sf{Answer \colon}}}}}$

From the Question,

• Mass of the car,m = 400Kg

• Displacement of the car,s = 2m

• Acceleration,a = g = 10m/s²

We know that,

$\huge{\boxed{\boxed{\sf{W = F.s}}}}$

Also,

$\sf{F = mg}$

Thus,

$\sf{W = mgs}$

Substituting the appropriate values,we get:

$\sf{W = 400 \times 10 \times 2} \\ \\ \rightarrow \: \sf{W = 400 \times 20} \\ \\ \rightarrow \: \boxed{\sf{W = 8000J}}$

The work done to move the car is 8,000J

Answer 2

$\huge{\underline{\boxed{\red{\mathrm{Answer:-}}}}}$

Mass of car (m) = 400 kg

Distance (s) = 2 m

Gravitational Force (g) = 10 m/s²

We know that :-

$\huge{\boxed{\boxed{\orange{\mathrm{W \: = \: F.S}}}}}$

________________

And also

F = mg

So,

→ W = mgs

_______________[Put Values]

W = 400 × 10 × 2

⇒ W = 4000 × 2

⇒ W = 8000 J

$\huge{\bigstar{\boxed{\green{\mathrm{W \: = \: 8000 \: J}}}}}$