A student is getting ready to go on a bike ride, but her bike’s back tire is flat! She connects a pump to the valve and adds air
to the tire until it is fully inflated and ready to ride.
After the addition of air to the tire, the air pressure inside the tire is now __________ the air pressure outside the tire.
Fill in the blank by choosing one answer below.
After the addition of air to the tire, the air pressure inside the tire is now __________ the air pressure outside the tire.
Fill in the blank by choosing one answer below.
2 answers:
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Answer:
Force on superball will be
Explanation:
We have given mass of superball m = 52 gram = 0.052 kg
Velocity change from 20 m/sec downward to 14 m/sec upward
Let downward velocity is positive then upward velocity is negative
So downward velocity is + 20 m/sec and upward velocity is -14 m/sec
Time is given as 1800 sec
We know that acceleration is rate of change of velocity
So
According to newton second law
Force = ma = 0.052×0.0188