Question

A ball of mass 4 kg has kinetic energy of
8J then the value of its speed (in m/s)
is​

Answer 1

Answer:

4kg

Explanation:

We know that,

Kl  

2

=  

2

mV  

2

 and P ( linear momentum ) =mv

So, KE=  

2m

(mV)  

2  

=

2m

P  

2

⇒P  

2

=2mKE⇒P=  

(2m)(KE)

Here, m=1 and KE=85. So,

P=  

2×(1)(8)  

=  

16  

=4 m kg s  

−1

hope it helped , have a nice day