Question

a car is traveling at a velocity of 20m/s and has a mass of 1050 kg what is its kinetik energy​

Answer 1

Answer:

m=1500kg

v=20m/s

k=

2

1

mv

2

=1/2×1500×20

2

=300000J=300kJ

Answer 2

Given :-

Velocity of the car travelling = 20 m/s

Mass of the car = 1050 kg

To Find :-

The kinetic energy of the car.

Analysis :-

Here we are given with the velocity and mass of the car.

In order to find the kinetic energy substitute the values such that kinetic energy is equal to one by two multiplied by mass and velocity.

Solution :-

We know that,

• KE = Kinetic energy
• m = Mass
• v = Velocity

Using the formula,

$\underline{\boxed{\sf Kinetic \ energy=\dfrac{1}{2} mv^2}}$

Given that,

Velocity (v) = 20 m/s

Mass (m) = 1050 kg

Substituting their values,

⇒ KE = 1/2 × 1050 × 20²

⇒ KE = 1/2 × 1050 × 400

⇒ KE = 1050×400 / 2

⇒ KE = 420000 / 2

⇒ KE = 210000 J

Therefore, the kinetic energy of the car is 210000 J.