Question

the mass of a body is 20 kg. it is moving with a speed of 10 m s-1 what is it kinetic energy?​

Answer 1

Answer:

1000 joules

Explanation:

kinetic energy=1/2(m)(v)²

          m=20kg, v=10m/sec

 =1/2(20)(10)²

=1/2(2000)

 =1000 jouls

HOPE IT HELPED!!

Answer 2

Answer:

• The kinetic energy of a body is 1000 joule.

Explanation:

Given that,

• Mass of a body (m) = 20 kg
• Velocity of a body (v) = 10 ms-¹

As we know that,

K.E = 1/2 × mv²

Where,

K.E = Kinetic energy of a object

m = Mass of a object

v = Velocity of a object

So,

↪K.E = 1/2 × 20 × (10)²

↪K.E = 10 × 100

↪K.E = 1000 Joule.

For information:

● P.E = mgh

Where,

P.E = Potential energy of object

m = Mass of object

g = Acceleration due to gravity

h = Height of object

● M.E = P. E + K.E

Where,

M.E = Mechanical energy of object

P.E = Potential energy of object

K.E = Kinetic energy of object