81°.
The law of reflection states that the angle of incidence is equal to the angle of reflection.
In a problem where a child is danger form drowning from a river who has a current of 3.1km/hr to east and the child is 0.6km fro the shore and the upstream is 2,5km from the dock. So base on the question the boat with a speed of 24.8 km/hr is 1.9 km because the child is 0.6 km off the dock so 2.5 minus 0.6
Answer:
Acceleration is equal to the displacement of an object divided by the time the object takes to complete the path
Explanation:
In other words, you can say that acceleration is the increase in the rate or speed of something.
Note: acceleration can also be negative, which means that instead of increasing, decrease in the rate or speed will happen. Such an acceleration is called deceleration.
I hope it helped! Good luck!!
Research has shown that the electrons orbit the nucleus in circular motions as shown on the classic Bohr model. FALSE