They traveled for six hours and forty two minutes
Given that Tsunami waves are almost the same as ripples since they both caused by throwing a rock into the pond, the major difference between the two is that the energy source of tsunami waves is much greater compared to ripples. Ripples are just transverse waves. Hope this answers your question.
Answer:
The force of the car is 15000N.
Explanation:
The unit of force is Newtons (N), so based on the question, the force is 15000 Newtons.
It makes calculations with very large and small numbers easier.
Scientific notation is a system used in order to It makes calculations with very large and small numbers easier. It is useful as it allows very large number that would take a lot of space to write otherwise, and it allows them to be calculated easier. 
for example is a incredible large number, but written in this form is immediately understandable and useful for calculation.
