Answer: 90 Ns
Explanation:
The impulse given to a 3 kg ball can be calculated by using the equation impulse = mass x change in velocity. In this case, the impulse would be:
impulse = 3 kg x 30 m/s = 90 Ns
So the impulse given to a 3 kg ball if its velocity increases by 30 m/s is 90 Ns
It's important to note that the impulse is a vector quantity and it's a measure of how much momentum is transferred to an object during a collision. In this case, the impulse is acting in the same direction as the change in velocity.