Question

An objects of mass 20 kilogram is moving with an uniform velocity of 5 metre per second. what is the kinetic energy possessed by the object ?​

Answer 1

Answer:

250 Joules

Explanation:

mass of the object = 20kg

velocity of the object =5m /s

kinetic energy possessed by the object =

KE = 1/2×M×V ^2

KE = 1/2 ×20 × 5 ^2

KE =1/2 ×20×25

KE 250J

Answer 2

✯ ᴀɴsᴡᴇʀ ✯

★ given →

☞︎︎︎ mass of object = 20kg

☞︎︎︎ speed of object = 5m/s

___________________________

★ to find →

☞︎︎︎ kinetic energy possessed by the object?

___________________________

★ solution →

☞︎︎︎ we know that,

☆ work done by an object due to its motion is called kinetic energy.

☆ kinetic energy(K.E) is directly proportional to mass and square of its velocity.

• m = maas ( kg )
• v = velocity ( m/s )
• KE = kinetic energy ( J or kg.m/s)

$\bold{KE = \frac{1}{2}m {v}^{2} } \\ \\ : \implies \: KE = \frac{1}{ \cancel{2}} \times \cancel{20 }\times {(5)}^{2} \\ \\ : \implies \: KE = 10 \times 25 \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ : \implies KE = 250 \: kg {ms}^{ - 1} \: \: \: \: \: \:$

hence, kinetic energy possessed by the object is 250kg.m/s or 250 joules ✔︎