Two identical 5 , ,kg . blocks are moving with same speed of 2 , … - Vidyadip

MCQ

Two identical $5\,\,kg$ . blocks are moving with same speed of $2\,\,m/s$ towards each other along a frictionless horizontal surface. The two blocks collide, stick together and come to rest. Consider to two blocks as a system, the work done on the system by the external forces will be ............. $\mathrm{Joule}$

A
$20$
B
$-20$
✓
$0$
D
None of these

✓

Answer

Correct option: C.

$0$

c

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