Answer:
1.Given: mass = 1000kg
velocity = 15m/s
Formula: Kinetic energy= mv²
KE = mv²
KE = (1000kg) (15m/s)²
KE = (1000 kg) (289 m²/s²)
KE = (289 000 kg m²/s²)
KE = 144 500 J
2.The kinetic energy is
=
1250
J
Explanation:
The kinetic energy is
K
E
=
1
2
m
v
2
The mass is
m
=
25
k
g
The velocity is
v
=
10
m
s
−
1
So,
K
E
=
1
2
⋅
25
⋅
10
2
=
1250
J
3.As from the equation of Kinetic Energy,
K.E = 0.5*m*(v^2)
= 0.5*150*(15^2)
= 16,875 J.
