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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