Science, asked by paad5598, 1 year ago

(a) Name two forms of mechanical energy. Define one the SI unit of energy.
(b) A man of mass 50kg jumps from a height of 0.5m here if gany=10 ms-2 what will be his energy at the highest point.
(c) Calculate the energy of body of mass 20kg moving the velocity of 0.1m/s

Answers

Answered by ishita651
6
potential and kinetic energy
the SI unit of work or energy, equal to thework done by a force of one newton.

i calculate its kinetic energy in (b
b: M = 20 kg

v = 0.1 m/s

kinetic energy = 1/2 × m × v^2 

= 1/2 × 20 × ( 0.1 )^2 

= 10 × 0.01

= 0.1

so kinetic energy is 0.1 J

ishita651: yaa
paad5598: please solve b part
Nikki57: I did , please see my answer :)
paad5598: please sis b and c part alag kardo
Nikki57: I did, once look at my ans
paad5598: sis Ekk Baar Or solve kardo
Nikki57: Ek aur baar? Kyu?
Nikki57: Kar toh diya ek baar solve
paad5598: please kuch samaj nhi Aaya sis b or c part ko highlights kardo bracket me
Nikki57: Kya nhi smj aaya?
Answered by Nikki57
7
Hey!

_________________________

Here are the answers-:

a) Mechanical energy is of two types -

• Kinetic energy
• Potential energy

Kinetic energy is the energy possessed by a body because of virtue of its motion.

Formula to find kinetic energy is 1/2 mv^2
Where, m = mass and v= velocity.

SI unit of energy is = joules (J)

___________________

b) Mass = 50 kg
Height = 0.5 m
Gravity due to Acceleration = 10 m/s^2
Energy at highest point =?

Potential energy = mgh
P.E = 50×10×0.5
P.E= 500×0.5
P.E= 250 J

___________________

c) Mass = 20 kg
Velocity = 0.1 m/s
Kinetic energy = ?

K.E = 1/2 mv^2
K.E = 1/2 × 20 × 0.1 × 0.1
K.E = 0.1 J

_________________________

Hope it helps...!!!

Nikki57: Thanks for brainliest.
paad5598: thanks yrr
Nikki57: My pleasure.
paad5598: ^ please tell the symbol means
Nikki57: ^= Power, this means that the number will be on head of base number
paad5598: OK thanks
Nikki57: my pleasure
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