Question

A man throw a mass of 2kg vertically upwards with velocity of 20ms-¹ . what is the potential energy of the mass after 1s ?
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀(take g=10s-²)


don't spam !!​

Answer 1

Question :

A man throw a mass of 2kg vertically upwards with velocity of 20ms-¹ . what is the potential energy of the mass after 1s ?

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀(take g=10s-²)

Given :

Mass = 2kg

Velocity = 20 m/s

time = 1 s

g = 10

To find :

Potential energy of mass = ?

Formula :

Potential energy = mgh

where,

m : mass of body

g : acceleration due to gravity

h : height of object

s = ut + $\tt \frac{1}{2}a{t}^{2}$

where,

u : initial velocity

a : acceleration

t : time

Solution :

h = ut + $\tt \frac{1}{2}g{t}^{2}$

$\tt \implies$ h = (20)(1) + $\tt \frac{1}{2}(10)({1}^{2})$

$\tt \implies$ h = 20 + 5

$\tt \implies$ h = 25 m

Potential energy = mgh

$\tt \implies$ Potential energy = 2 × 10 × 25

$\tt \implies$ Potential energy = 500 J

$\tt \therefore$ Potential Energy = 500 J

Some other kinametical equations :

●v = u + at

●$\tt {v}^{2} = {u}^{2} - 2as$

● Kinetic energy = $\tt \frac{1}{2}m{v}^{2}$

Answer 2

Answer:

A

B

C

D

E

F

G

H

I

J

K

L

M

NO

P

Q

R

S

T

U

V

W

X

Y

Z

dekho mereko pura ata hai.. aaj hi sikha hai ( ╹▽╹ )( ꈍᴗꈍ)

apko ata hai kya ? btao btao..ata hai ?