define perimeter.??????
Answers
Answer:
Oh I lv uh to g✌️;-)
Step-by-step explanation:
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}
2
1
at
2
where,
u : initial velocity
a : acceleration
t : time
Solution :
h = ut + \tt \frac{1}{2}g{t}^{2}
2
1
gt
2
\tt \implies ⟹ h = (20)(1) + \tt \frac{1}{2}(10)({1}^{2})
2
1
(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 v
2
=u
2
−2as
● Kinetic energy = \tt \frac{1}{2}m{v}^{2}
2
1
mv
2
Answer:
Perimeter is the continuous line forming the boundary of a closed geometrical figure.