Answer:
The kinetic energy of the wagon is 967.0 J
Explanation:
Given that,
Force = 120 N
Mass = 55 kg
Height = 8 m
We need to calculate the kinetic energy of the wagon
Using newtons law
[tex]F = ma[/tex]
[tex]\dfrac{120}{55}=a[/tex]
[tex]a =2.2\ m/s^2[/tex]
Using equation of motion
[tex]v^2 =u^2+2as[/tex]
Where,
v = final velocity
u = initial velocity
s = height
Put the value in the equation
[tex]v^2=0+2\times2.2\times8[/tex]
[tex]v=5.93\ m/s[/tex]
Now, The kinetic energy is
[tex]K.E=\dfrac{1}{2}mv^2[/tex]
[tex]K.E=\dfrac{1}{2}\times55\times(5.93)^2[/tex]
[tex]K.E=967.0\ J[/tex]
Hence, The kinetic energy of the wagon is 967.0 J
