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- 1. Multiple ChoiceWhat will cause an object to move?Applied forcesBalanced forcesUnbalanced forces
- 2. Multiple Choice(T or F?) A balanced force is only an object that is not moving.TrueFalse
- 3. Multiple Choice
If an object is stationary (not moving) the forces acting upon it are _____________unbalancedweakbalancedHulk Smash! - 4. Multiple ChoiceThe force that pulls things toward earth.SpeedGravity
- 5. Multiple ChoiceWhich one is balanced?topbottomboth
- 6. Multiple ChoiceWith unbalanced forces, the object will move in the direction of the _______ force.largersmallerequalcannot be determined
- 7. Multiple ChoiceWhat is the net force?20 N0 N400 N40 N
- 8. Multiple Choice
What is the unit to MEASURE force?
Kilogram
Meter
Pounds
Newton
- 9. Multiple Choice
A ____________ is a push or a pull on an object.
friction
force
magnet
gravity
- 10. Multiple ChoiceWhat is the net force?10 N0 N25 N1 N
- 11. Multiple ChoiceBalanced or unbalanced?balancedunbalanced
- 12. Multiple Choice
Forces that have a net force of zero Newtons
Balanced force
Unbalanced force
- 13. Multiple ChoiceThe sum of all forces acting on an object.Contact ForceBalanced ForceUnbalanced ForceNet Force
- 14. Multiple ChoiceWhat is the net force of an object that is not moving?0 N100 NUpward force10 N
- 15. Multiple Choice
Which example would be a balanced force?
Train moving at a constant speed in the same direction.
A skier going down a hill.
A basketball being passed to a teammate.
An apple falling to the floor.
- 16. Multiple ChoiceWhat type of force?MagneticGravitationalAppliedNormal
- 17. Multiple ChoiceWhat force brings the pencil down?AppliedMagneticNormalGravitational
- 18. Multiple Choice
Which two factors affect the gravitational pull between two objects?
mass and weight
weight and distance
mass and distance
distance and volume
- 19. Multiple Choice
What type of force explains why a ball would roll for a longer amount of time on a tile floor than it would on carpet?
gravity
friction
normal force
air resistance
- 20. Multiple Choice
What type of forces are acting on this hang glider?
gravity and friction
friction and air resistance
gravity and air resistance
friction and applied force
- 21. Multiple Choice
If both people kick the ball in the opposite direction, which direction will the ball go based on the force applied by each player?
Left
Right
- 22. Multiple Choice
Which of the following is NOT a contact force?
gravity
friction
applied force
normal force
- 23. Multiple Choice
Which of the following is NOT an example of friction?
A ballplayer wearing cleats to grip the ground better
The toy car rolls on the floor and eventually stops rolling
A car stops better when the road is dry compared to being wet
A dog picks up a bone and carries it to hole to hide it
- 24. Multiple Choice
A moment is...
a force measured in Newtons
a turning force measured in newton metres
a distance measured in metres
a time intervals measured in clicks
- 25. Multiple ChoiceWe use levers to make work easier.?TrueFalse
- 26. Multiple ChoiceWhat is the anticlockwise moment acting on this crane?80,000Nm100,000Nm120,000Nm140,000Nm
- 27. Multiple ChoiceThe easiest way to open a heavy door is by applying the forceNear the hingesIn the middle of the doorAt the edge of the door far from the hingesAt the top of the door
- 28. Multiple Choice
What to we call forces applied to anything that turns?
Minute
Moment
Minimum
Monument
- 29. Multiple Choice
State the principle of moments.
When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the same pivot.
When a system is in equilibrium, the sum of the total clockwise moment is greater the sum of the total anti-clockwise moment about the same pivot.
When a system is in equilibrium, the sum of the total clockwise moment is less than the sum of the total anti-clockwise moment about the same pivot.
When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the different pivot.
- 30. Multiple Choice
The moment of a force causes an object to
move forward
move backward
stop moving
turn about a fixed point
- 31. Multiple Choice
Moment can be calculated using the equation:
M = F × d
M = F / d
M = F2 × d
M = F / d2
- 32. Multiple Choice
The SI unit of moment of force is –
m
N
kgf
Nm
- 33. Multiple Choice
When an object is in equilibrium, which equation is true?
Clockwise moment = anticlockwise moment
Clockwise moment + anticlockwise moment = 0
Clockwise moment / anticlockwise moment = 0
Clockwise moment + anticlockwise moment = resultant force
- 34. Multiple Choice
Why do we have a stronger gravitational attraction with Earth than the Sun?
the sun has a larger mass
the Earth has a larger mass
we are closer to center of sun
we are closer to center of Earth
- 35. Multiple Choice
If a feather and a hammer are dropped at the same time on the moon, where there is no atmosphere, which one will hit the ground first?
Neither, there is no gravity on the moon.
hammer because it has more mass
feather because it has less mass
both will hit at the same time, there is no wind resistance
- 36. Multiple ChoiceWhich of the following will not change in different gravitational fields?weightforcemasspounds
- 37. Multiple Choice
The force of gravity (mass x gravity) is also known as...
mass
weight
distance
acceleration
- 38. Multiple Choice
Earth's gravity, 9.8 m/s2, is considered a/an...
force
weight
acceleration
mass
- 39. Multiple ChoiceThis variable in an experiment is the one being deliberately changed by the scientist.dependent variableindependent variabledatacontrol group
- 40. Multiple ChoiceAn experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...The type of plantThe amount of sunlightThe type of musicThe type of liquid
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