A 5.0-kg bag of groceries is tossed onto a table at 2.0 m/s and slides to a stop in 1.6 s .
1 answer:
Answer:
-6.3 N
Explanation:
The equation we need to use is:
where
F is the force of friction, that slows down the bag
is the time of the motion
m is the mass of the bag
v is the speed of the bag
Since the mass of the bag does not change, we can rewrite the equation as
where we have:
Substituting and re-arranging the equation, we can find the force of friction:
where the negative sign means that the force is in the opposite direction to the motion of the bag.
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Explanation:
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initial speed of ball
Final speed of ball (in upward direction)
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Answer:
Mass and height
Explanation:
Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about
Which is represented as;
stands for gravitational potantial energy,
m stands for mass of object,
g is the gravitational constant and
h is the height.
Here we see that mass of object and height is directly proportional to the gravitational potential energy.
That means increasing in mass and height will result in increasing gravitational potential energy.