1. a) What is the work done when a box weighing 10N is lifted up onto a shelf 2 m above the floor? b) If we consider the acceleration due to gravity to be 10ms 2and the same box (weighing 10N) moves at 10ms 1 how much kinetic energy is used? c) How much potential energy does the box have when it is on the shelf? d) Thinking about the conservation of energy, if a block of mass 20kg falls off a shelf that is 3m above the ground what is the velocity of the box just before it it's the ground?
1. a) What is the work done when a box weighing 10N is lifted up onto a shelf 2 m above the floor? b) If we consider the acceleration due to gravity to be 10ms 2and the same box (weighing 10N) moves at 10ms 1 how much kinetic energy is used? c) How much potential energy does the box have when it is on the shelf? d) Thinking about the conservation of energy, if a block of mass 20kg falls off a shelf that is 3m above the ground what is the velocity of the box just before it it's the ground?
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Please Answer part D only.
questions A,B,C are just there as context should it be needed.
Transcribed Image Text:1.
a) What is the work done when a box weighing 10N is lifted
up onto a shelf 2 m above the floor?
b) If we consider the acceleration due to gravity to be 10ms
2and the same box (weighing 10N) moves at 10ms 1 how
much kinetic energy is used?
c) How much potential energy does the box have when it is
on the shelf?
d) Thinking about the conservation of energy, if a block of
mass 20kg falls off a shelf that is 3m above the ground
what is the velocity of the box just before it it's the
ground?
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