Physical Science Term 1 Review
- 1.How much work was done if 5 N of force was used to move an object 25 meters?
- A.
30 Joules
- B.
125 Joules
- C.
5 Joules
- D.
20 Joules
- 2.Which of the following statements are true about work?
- A.
Work is a form of energy.
- B.
A Watt is the standard metric unit of work.
- C.
Work is a time-based quantity; it is dependent upon how fast a force displaces an object.
- D.
None of the above.
- 3.Which of the following statements are true about potential energy?
- A.
Moving objects cannot have potential energy.
- B.
Both gravitational and elastic potential energy are dependent upon the mass of an object.
- C.
Potential energy is the energy stored in an object due to its position.
- D.
None of the above.
- 4.An arrow is drawn back so that 50 Joules of potential energy is stored in the stretched bow and string. When released, the arrow will have a kinetic energy of ____ Joules.
- A.
50
- B.
More than 50
- C.
Less than 50
- D.
None of the above.
- 5.A job is done slowly, and an identical job is done quickly. Both jobs require the same amount of ____, but different amounts of ____.
- A.
Work, power
- B.
Force, work
- C.
Energy, work
- D.
None of the above.
- 6.What is kinetic energy?
- A.
The energy an object has due to its motion
- B.
The stored energy of an object due to its position or condition
- C.
The energy an object might have if it existed
- 7.What would have the greatest kinetic energy?
- A.
A car driving down a hill
- B.
A person running down a hill
- C.
A ball rolling down a hill
- 8.A force that causes a change in motion is ...
- A.
Momentum
- B.
Balanced
- C.
Inertia
- D.
Unbalanced
- 9.All of the forces that act on an object add up to equal...
- A.
Net Force
- B.
Inertia
- C.
Acceleration
- D.
Mass
- 10.A force that acts in opposition to motion is called...
- A.
Gravity
- B.
Friction
- C.
Push
- D.
Pull
- 11.The units for Power are?
- A.
Watts
- B.
Hertz
- C.
Pascals
- D.
Decibels
- 12.If an object has kinetic energy, then it also must have _____.
- A.
Speed/velocity
- B.
Impulse
- C.
Acceleration
- D.
Force
- 13.The tendency of an object to resist changes in its velocity is called:
- A.
Friction
- B.
Static Friction
- C.
Kinetic Friction
- D.
Inertia
- 14.In order for work to be done there must be _________________________.
- A.
Mass
- B.
Power
- C.
Movement parallel to force
- D.
Time
- 15.Your "weight" is properly defined as
- A.
The amount of material of which you are composed
- B.
The gravitational force which Earth exerts on you
- C.
The gravitational force you exert on Earth
- D.
The force you exert on a set of bathroom scales
- E.
None of the above
- 16.A push or a pull on matter is called a ...
- A.
Inerita
- B.
Mass
- C.
Acceleration
- D.
Force
- 17.Forces that do not cause changes in motion are ....
- A.
Momentum
- B.
Balanced
- C.
Inertia
- D.
Unbalanced
- 18.How much matter is in an object is measured by
- A.
Volume
- B.
Mass
- C.
Temperature
- D.
Weight
- 19.Newton's 2nd Law is about...
- A.
Force, Mass, and Acceleration
- B.
Volume
- C.
Momentum
- D.
Inertia
- 20.If an object is moving at a constant velocity, the forces on it are:-
- A.
Unequal
- B.
Resolved
- C.
Forwards
- D.
Balanced
- E.
Opposite
- 21.If a bicycle and rider of mass 80kg is accelerating at 1.5m/s2 the force pushing it is:-
- A.
0.02N
- B.
81.5N
- C.
120N
- D.
120m
- E.
120kg
- 22.A motorcyclist of mass 250kg accelerates from rest to 20m/s in 4s. What is the force from the engine?
- A.
1250N
- B.
50N
- C.
1000N
- D.
5000N
- E.
20000N
- 23.A seatbelt brings a passenger to a stop from 12m/s in just 2s. If the passenger has a mass of 60kg, what is the force exerted by the seatbelt?
- A.
720N
- B.
360N
- C.
10N
- D.
2.5N
- E.
0.25N
- 24.Which of the following conditions have to be true when a parachutist reaches Terminal Velocity
- A.
The forces on her must be balanced
- B.
Her weight must be greater than air resistance
- C.
Her weight must be less than air resistance
- D.
Her speed must be greater than her weight
- E.
Her speed must be less than air resistance
- 25.Does the speedometer of a car read average speed or instantaneous speed?
- A.
Average speed
- B.
Instantaneous speed
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