Question

In a group of 100 people ,68 speak Spanish ,50 speak English and all people speak one Language the how many speak both English and Spanish and how many speak only English.

Answer 1

Given:-

Kinetic Energy ,KE = 338 KJ = 338000 J

Mass of car,m = 1000 kg

To Find:-

Velocity ,v

Solution:-

As we know that Kinetic Energy is energy produce by body due to virtues of its motion .

• KE = 1/2mv2

Where,

KE is the Kinetic Energy

m is the mass

v is the speed/velocity

Substitute the value we get

→ 338000 = 1/2 × 1000 × v²

→ 338000 = 500 × v²

→ v² = 338000/500

→ v² = 676

→ v = √676

→ v = 26 m/s

Therefore,the velocity of the car is 26 m/s .