Question

A car of mass 1500 kg is moving with constant velocity 10 m/s. Calculate the force

required to move this car ?​

Answer 1

$\huge{\underline{\sf{\red{Given-}}}}$

• Mass (m) = 1500 kg

• Velocity (v) = 10m/s

$\huge{\underline{\sf{\blue{To \: Find-}}}}$

• Force = ?

$\huge{\underline{\sf{\pink{Solution-}}}}$

Here,

[ When An Object Moves with Constant Velocity, it posses K.E (Kinetic Energy) ]

$\boxed{\sf\orange{★ \: K.E = \frac{1}{2} m {v}^{2} }}$

Here,

• m = 1500kg

• v = 10m/s

Placing Values,

$\implies\sf{K.E = \frac{1}{2} \times 1500 \times {10}^{2} }$

$\implies\sf{K.E = \frac{1}{2} \times 1500 \times 100}$

$\implies\sf{K.E = \frac{1}{2} \times 150000}$

$\implies\sf{K.E = </p><p>\frac{\cancel{ \frac{1}{2} }} \times {\cancel {150000}}}</p><p>$

$\boxed{\leadsto\sf\green{★ \:K.E =75000 \: N}}$

$\large{\underline{\sf{\purple{∴ \: Force \: Is \: 75000 \: Newton.}}}}$