A 1 kg mass has a kinetic energy of 1 joule when its speed is:
Given,
Mass of body m= 1 kg
Kinetic energy = 1 J
Velocity v=?
Kinetic energy = 
m v2
Substituting the given values in the equation:
1 J = 
×1× v2
1×2 = v2
v2 = 2
v= 
v= 1.4 ms-1
6
A 1 kg mass has a kinetic energy of 1 joule when its speed is:
Given,
Mass of body m= 1 kg
Kinetic energy = 1 J
Velocity v=?
Kinetic energy = m v2
Substituting the given values in the equation:
1 J = ×1× v2
1×2 = v2
v2 = 2
v=
v= 1.4 ms-1