Alex rides her bike at 12.0 km/hr for 2.25 hr. what distance has alex traveled?
1 answer:
Answer: Alex traveled a distance of 27.0 km in 2.25 hours.
Further Explanation:
Speed is how fast an object moves or how far an object travels per unit time. If the distance traveled and the total time of travel are known, the speed can be calculated using the formula:
In the problem, we are given:
speed = 12.0 km/hr
time = 2.25 hr
We are looking for the distance traveled by Alex which can be represented by the variable d.
We can solve for d by manipulating the speed formula to get the equation:
distance, d \ = \ (speed)(time)[/tex]
Plugging in our values for speed and time, we get the equation:
Since the number of significant figures of the given is 3, the answer must be expressed with 3 significant figures, too.
Thus, the distance Alex traveled for 2.25 hours at a speed of 12.0 km/hr is 27.0 km.
Learn More
- Learn more about Velocity brainly.com/question/862972
- Learn more about Acceleration brainly.com/question/4134594
- Learn more about Distance - Time Graphs brainly.com/question/1378025
Keywords: speed, distance, kinematics
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Answer:
78.4 KN/m
Explanation:
Given
mass of person 'm' =80 kg
car dips about i.e spring stretched 'x'= 1 cm => 0.01m
acceleration due to gravity 'g'= 9.8 m/s^2
as we know that,in order to find approximate spring constant we use Hooke's Law i.e F=kx
where,
F = the force needed
x= distance the spring is stretched or compressed beyond its natural length
k= constant of proportionality called the spring constant.
F=kx ---> (since f=mg)
mg=kx
k=(mg)/x
k=(80 x 9.8)/ 0.01
k=78.4x
k=78.4 KN/m