• #### 1.  Stored energy in the form of position or condition.

• potential energy
• kinetic energy
• momentum
• mechanical energy

• 10 J
• 20 J
• 40 J
• 400 J

• 18 m
• 4 m
• 10 m
• 6 m

• 14 J
• 140 J
• 1400 J
• 14000 J

• 20 W
• 120 W
• 200 W
• 1200 W

• work
• energy
• momentum
• power

• kJ
• kW
• kJ/hour
• kW/hour

• Power
• Energy
• Seconds
• Joules
• #### 9.  What is the difference between calculating power and work?

• Power takes into account the time it takes to complete a task
• Work takes into account the time it takes to complete a task
• Power is force/area
• Work is force/area
• #### 10.  Where is the kinetic energy of pendulum at its highest?

• at the top of the swing
• at the bottom of the swing
• at 1/4 of the swing
• at 3/4 of the swing
• #### 11.  All the following activities produce the same amount of work done EXCEPT

• Lifting a box vertically through a height of 1 m with a force of 20N against the gravitational force.
• Pushing a trolley over a distance of 2 m with a force of 10 N.
• Pulling a drawer over a distance of 20 cm with a force of 1 N
• Lifting up a stack of books weighing 20N to a vertical height of 100 cm.

• I and II
• II and III
• III and IV
• I and IV

• Coal
• Nuclear
• Hydro
• Oil

• Joule
• Newton
• Calorie
• Watt
• #### 15.  Which of the following activities involves work done?

• An old man lying still on the floor
• A boy running around a stadium
• A girl holding a stack of books
• A baby crying

• 55
• 60
• 65
• 70
• #### 17.  Which situation is work not done?

• lifting a 20 pound box off the floor
• holding a 20 pound box above the floor
• sliding a 20 pound box across the floor
• sliding a 20 pound box up an inclined plane
• #### 18.  Energy ___________________ drives our energy world.

• creation
• conversion
• conservation
• None of these
• #### 19.  The diagram shows a man pushing against a wall. Which of the following statements describes the situation correctly?

• A big amount of work is done as the man uses a big force to push the wall.
• Gravitational force is involved when the man pushes the wall.
• No work done in this situation as the wall is not displaced.
• There is no work done because the wall is too heavy.

• 2ms-1
• 3 ms-1
• 5 ms-1
• 30 ms-1