The average speed is a scalar quantity. The average speed of the skier is 10 km/hrs.
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What is the average speed?</h3>
It is calculated by dividing the total distance by the total time elapsed.
The
Where,
= average velocity
= displacement = 7.5 km
= change in time = 45 min = 0.75 hours
Put the values in the formula,
Therefore, the average speed of the skier is 10 km/hrs.
Learn more about average speed:
https://brainly.in/question/32459982
Answer:
a periscope use total internal reflection to allow us to see things
the reflection happens at 45°
Explanation:
B. Wagon B will accelerate at twice the rate as Wagon A. hope this helps!
The momentum of an object is equivalent to the product of the object's mass and velocity. Computing the momentum for each ball:
A- 15 * 0.7 = 10.5
B- 5.5 * 1.2 = 6.6
C- 5.0 * 2.5 = 12.5
D- 1.5 * 5.0 = 7.5
Therefore, ball C has the greatest momentum.
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