Answer:
The speed of the object will be "2.4 m/s".
Explanation:
The given values are:
Kinetic energy,
K.E = 90 J
Mass,
m = 30 kg
Speed,
v = ?
As we know,
⇒ [tex]K.E=\frac{1}{2} (mass\times speed^2)[/tex]
On substituting the values, we get
⇒ [tex]90=\frac{1}{2} (30\times v^2)[/tex]
⇒ [tex]90=15\times v^2[/tex]
⇒ [tex]v^2=\frac{90}{15}[/tex]
⇒ [tex]v^2=6[/tex]
⇒ [tex]v=\sqrt{6}[/tex]
⇒ [tex]v=2.44 \ m/s[/tex]
