Find the momentum of a body of mass 10kg having a kinetic energy of 5J.
Answers
Answered by
0
Answer:
ANSWER
t=10sec
10=5×v[P=mv]
v=2m/s
As F=0.2N
a=
5
0.2
m/s
2
=
25
1
m/s
2
[a=
m
F
]
at t=0,KE=
2
1
×s×(2)
2
[KE=
2
1
mv
2
]
KE
i
=10J
Now, at t=10sec, v
f
=u+at
v
f
=g+
25
1
×10=2.4m/s
2
∴KE
f
=
2
1
×5×(2.4)
2
=14.4J
∴△KE=14.4−10
=4.4J
Answered by
4
Physics
Newton's Law of Motion
Answer :
Mass of body = 10kg
Kinetic energy = 5J
We have to find kinetic energy of body
➤ Relation between kinetic energy and momentum of moving object is given by
- K = P²/2m
K denotes kinetic energy
P denotes momentum
m denotes mass of body
⭆ K = P²/2m
⭆ 5 = P²/2(10)
⭆ 5×20 = P²
⭆ P = √100
⭆ P = 10 Ns
Cheers!
Similar questions