2m/s
Explanation:
Given parameters:
Distance traveled = 60m
time taken = 30seconds
Unknown:
Speed of skateboarder = ?
Solution:
Speed is the rate of change of distance with time taken. It is a scalar quantity that only revers magnitude;
Speed =
Speed = = 2m/s
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Speed brainly.com/question/1548911
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Answer:
After it finishes speeding up, the car goes 72 [m]
Explanation:
To solve this problem we must first understand the graphics. It is clear that in the last 6 seconds, that is, from the fourth to the tenth second, the car moves at a constant speed.
Therefore in this time interval, the car moves at a constant speed.
With the following equation of kinematics, we can calculate the distance traveled.
where:
x = final point [m]
x₀ = initial point [m]
v = constant velocity = 12 [m/s]
t = time = 6 [s]
Now replacing we have: