Answer:
it should be changes in velocity
Explanation:
I hope this helps!
Answer:
30m
Explanation:
Wavelength times frequency equals velocity
300 divided by 10 = 30
Answer:
Thus, 
Explanation:
The angular speed is defined as the rate of change of angular velocity.
Its SI unit is rad/s and other units are rev/min or rev/s.

1) A The 78g
2) C Push on the wagon in the opposite direction as Jack with a force that is the same as Jack is applying.
Answer:
10N
Explanation:
1. Every Action has an equal and opposite reAction.
2. If 10N of force is acted upon an wrench, then the wrench will react with an equal amount of force, but in the opposite direction.