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Work Power And Energy
Quiz 1
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Q.1
Gravitational potential energy depends on the ________ and ________ of the object.
Height and mass
Friction and movement
Mass and Movement
Height and Friction
Q.2
What will be the formula if we are finding the TIME using the formula of power?
Time = work donepowerTime\ =\ \frac{work\ done}{power}Time = powerwork done
Time = powerwork doneTime\ =\ \frac{power}{work\ done}Time = work donepower
Time = work x powerTime\ =\ work\ x\ powerTime = work x power
All of above
Q.3
What are the factors that can affect the power?
Work done and time
Work done and velocity
Work done and force
None of these
Q.4
When did an object have more kinetic energy?
When the time given on an object doubled
When the mass of an object doubled
When the mass of an object becomes half
All of above
Q.5
Which of the following statements show kinetic energy?
The battery of a lit flashlight
A golf ball placed at the edge of the hole
A river flowing down a hill
Both A & B
Q.6
A force exerted over a distance to move an object is ______________________.
power
work
momentum
Watt
Q.7
Energy of a rock perched on a cliff is an example of...
gravitational
elastic
chemical
kinetic
Q.8
Energy from a compressed spring would be an example of...
kinetic
elastic
gravitational
chemical
Q.9
The faster an object moves, the ________ kinetic energy it has.
more
less
none of the above
all of the above
Q.10
When you release a stretched rubber band, the rubber band has ________ energy.
kinetic
potential
none of the above
all of the above
Q.11
What is the formula for calculating the total amount of mechanical energy?
ME = KE + PE
KE = ME + PE
PE = KE + ME
ME = 1/2 mv2
Q.12
Why does the total amount of mechanical energy stay constant in a system?
energy is not created or destroyed
energy leaves
energy enters
energy is not converted from one form into another
Q.13
In comparing of table tennis ball and tennis ball, which ball covered a longer distance once it was placed in a slope?
table tennis ball
tennis ball
same distance
All of above
Q.14
Elastic potential energy is energy stored in object that are compressed or __________.
movement
stored
harnessed
pulled
Q.15
What are the factors affect gravitational potential energy?
Mass and Velocity
Mass, Acceleration due to gravity, and Height
Mass, Acceleration due to gravity and Time
None of these
Q.16
What are the two necessary conditions for work to be done?
Force and Velocity
Force and Displacement
Force and Time
None of these
Q.17
What is the unit for work?
Joules
Newton
Watts
All of above
Q.18
The sun provides ____________ and ____________ energy that can be harnessed and used for solar power.
chemical, sound
mechanical, light
sound, light
light, thermal
Q.19
A student with a mass ofkg walks up a flight of stairs with a height of 3.4 meters. How can he decrease his power?
walk slower
walk faster
carry his friends books
All of above
Q.20
Check all of the things that can affect power
Work
Time
Force
All of above
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