Q.1
A roller coaster whose average speed ism/s is at the top of ahill and weighs 966N. At the top of the hill the coaster car has ___________________ energy.
  • almost all kinetic energy
  • almost all potential energy
  • mostly kinetic energy
  • some kinetic and some potential energy
Q.2
Which statement illustrates work done?
  • A weightlifter holds a barbell above her head.
  • A teacher applies a continuous force to a book, holding it flat.
  • A student flicks a paper football and moves it over the edge of a table.
  • A waiter carries a tray full of meals while listening to a customer.
Q.3
The is the energy due to the splitting of atoms.
  • nuclear
  • chemical
  • mechanical
  • radiant
Q.4
IfJoules were necessary to move a 4 Newton crate, how far was the crate moved?
  • 272 m
  • 17 m
  • 4.05 m
  • 272 cm
Q.5
This is energy that is stored for later use.
  • kinetic energy
  • potential energy
  • mechanical energy
  • radiant energy
Q.6
This is energy that is stored for later use.
  • kinetic energy
  • potential energy
  • mechanical energy
  • radiant energy
Q.7
What type of simple machine is a wheelchair access ramp?
  • Pulley
  • Inclined plane
  • Lever
  • Wedge
  • Wheel and Axle
Q.8
Which type of energy converts matter into energy?
  • Chemical
  • Nuclear
  • Electrical
  • Radiant
Q.9
Two workers useN of force to move a sofa 2 meters in 2 seconds. How much power is required?
  • 100 watts
  • 400 watts
  • 104 watts
  • 50 watts
Q.10
A soccer player kicks a ball withNewtons of force causing it to travelmeters. How much work is done on the ball?
  • 200 J
  • 80 J
  • 5 J
  • 2000 J
Q.11
A cannon shoots aN stunt performerm. How much work is done on the performer?
  • 100,000 J
  • 10,000 J
  • 10 J
  • 1,000,000 J
Q.12
What type of simple machine is a bike pedal?
  • Inclined Plane
  • Pulley
  • Wedge
  • Lever
Q.13
Which of the following is defined as work done per unit time?
  • energy
  • force
  • power
  • work
Q.14
What type of energy do we use to cook food?
  • mechanical
  • radiant
  • thermal
  • kinetic
Q.15
How much work is done in holding aN sack of potatoes while waiting in line at the grocery store for 3 minutes?
  • 15 J
  • 45 J
  • 0 J
  • 5 J
Q.16
What are two things required for work to be done? Check all that apply.
  • Force
  • Distance
  • Constant Speed
  • Both A & B
Q.17
J of work is done lifting a 20.0 N book in the air. How high was it lifted?
  • 2.5 m
  • 3.5 m
  • 0.4 m
  • 25 m
Q.18
Light is an example of _________
  • thermal energy
  • radiant energy
  • mechanical energy
  • nuclear energy
Q.19
Which energy-conversion chain occurs whenever coal is burned to create steam to spin the generator at a power station?
  • chemical to mechanical to potential
  • thermal to chemical to mechanical to electrical
  • chemical to thermal to mechanical to electrical
  • chemical to chemical to mechanical to radiant
Q.20
The amount by which a machine multiplies input force is known as the
  • work.
  • power.
  • output force.
  • mechanical advantage.
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