Question

2.
The internal forces acting on an isolated system
1) Can change the velocity the system
2) Can change the acceleration of the system
3) Cannot change the velocity the system
4) Can change the direction of motion​

Answer 1

Answer:

3

Explanation:

internal forces does not affect the body

Answer 2

Answer:

3) Cannot change the velocity the system

Explanation:

External forces only can change velocity of the system.