Answer:
the ice became smaller and turned to liquid because of the absorption of heat from the surrounding of the ice cube which makes it to change its form from solid to liquid
Answer: Frequency distribution helps to understand data. some complex data needs to be converted into intervals to see its frequency of occurrence. it helps to find the mean median and mode of the data. It helps in the analysis of data and its practical implementation.
Explanation:
The car takes 10.8 seconds to reach a velocity of 42.1 m/s
Explanation:
The motion of the car is at constant acceleration, so we can use the following suvat equation:
where
v is the final velocity of the car
u is its initial velocity
a is the acceleration
t is the time
For the car in this problem, we have:
u = 15.0 m/s
v = 42.1 m/s
Solving for t, we find the time it takes for the car to reach that velocity:
Learn more about acceleration here:
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Acceleration = change in velocity divided by time taken...
I.e Acceleration = (Final velocity - Initial Velocity) /time taken...
The question says the body accelerate from rest... Therefore it's initial velocity = 0
It reach a speed(velocity) of 20m/s.. My final velocity
And the time taken to attain the velocity = 5 seconds....
Therefore
acceleration = (20-0)/5
a = 20/5
a = 4ms¯²
Hope this helped....
