Question

Statement-1 : Internal forces can change total linear momentum of system.
Statement-2 : Due to work of internal forces kinectic energy of system may change.
A. Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
B. Statement -1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
C. Statement-1 is true, statement-2 is false.
D. Statement-1 is false, statement-2 is true.

Answer 1

Correct Answer - D
Linear momentum of the system is changed by net external force but internal force can do some non zero work