cuppykittyy
04.02.2021 •
Mathematics
A person runs at 35 m/s from a standstill. What is their acceleration after 5 sec?
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Ответ:
The acceleration is 7m/s^2
Step-by-step explanation:
Given
It is 0 because the person starts from a standstill
Required
Determine the acceleration
This is calculated using Newton's first equation of motion
Substitute values for v, u and t
Divide both sides by 5
Hence, the acceleration is 7m/s^2
Ответ:
The resulting force is 3739.65 pounds
Explanation:
It is given that A piling for a high-rise building is pushed by two bulldozers at exactly the same time. One bulldozer exerts a force of 1850 pounds in a westerly direction. The other bulldozer pushes the piling with a force of 3250 pounds in a northerly direction.
Let x= 1850 pounds and y= 3250 pounds, then the magnitude of the resultant force upon the piling will be:
Therefore, the resulting force is 3739.65 pounds