Answer:

Explanation:
Momentum is the product of mass and velocity. The formula is:

The mass of the cart is 2.0 kilograms. The momentum is 10.0 kg m/s. The velocity is unknown.

Substitute the values into the formula.

We want to solve for the velocity (v). Therefore we must isolate the variable. It is being multiplied and the inverse of multiplication is division. Divide both sides of the equation by 2.0 kg.

The kilograms will cancel each other out.


The velocity is <u>5 meters per second.</u>
Answer:
that's called Doppler effect
Explanation:
its observed because the distance between the source of sound and the observer is changing. If the source and the observer are approaching, then the distance is decreasing and if the source and the observer are receding.
-Hops
I had a similar project in science I suggest adding different attributes from different sea creatures and naming it whatever you like. Hope this helped :)
Answer:
4. The choose b. 0.000355
Ans; 3.55× 10-⁴ = 0.000355
5. The choose C. 80600
Ans; 8.06 ×10⁴= 806×10² = 80600
I hope I helped you^_^