WorksheetsChapter 5 Review
Total questions: 33
Worksheet time: 33mins
A push or pull is called a(n) _____________.
acceleration
force
power
work
Forces can be added together only if they are _____________________________.
acting on the same object
balanced forces
substantial
unaffected by gravity
To do work on an object, the object must _________________________.
Move in the opposite direction of the force
Move in the same direction of the force.
Only use force
All of the above
Which is an example of doing work?
Picking up your stack of books.
Shooting a basketball.
Putting force on a cabinet by pushing on it, but it does not move.
Holding your supplies.
What happens when two different forces of different strength pull an object in opposite directions?
They cancel each other out.
They add together to pull the object.
The smaller force is subtracted from the larger object.
The object does not move.
What happens when two opposite forces of the same strength pull on an object?
They are added together.
The object doesn't move.
The smaller force is subtracted from the larger force.
They cause the object to move.
If you exert a force of 10 newtons to kick a soccer ball, which travels 20 meters. How much work was done? (W=FxD)
200 Joules
2 Joules
200 Newtons
200 Watts
Watts are used to measure _____________.
Force
Joules
Power
Work
The rate at which work is done is the definition to ___________.
Force
Net Force
Power
Work
A baseball player hits a ball with 25 Joules for a distance of 75 meters. It took the ball 10 seconds to land. What is the power?
187.5 Joules
30 Watts
187.5 Watts
10 Watts
A machine can make work easier by _________________.
increasing work
increasing force
decreasing power
Output force/Input force is the formula for ____________________.
Efficiency
Mechanical Advantage
Power
Work
The mechanical advantage of a machine is the number of times a machine increases ___________.
the amount of friction.
the force put into the machine.
the change in direction.
the distance the object moves.
The input force is ___________________.
how much force the machine exerts on the object.
how much friction is on an object.
how much force you put into the machine when you do work.
the net force on an object.
The output force is _________________.
how much force the machine exerts on an object.
how much friction is on an object.
how much force you exert when you do work.
the net force on an object.
Efficiency is expressed as a(n) __________________.
percentage.
decimal.
fraction.
exponent.
Due to the force of _________________, all machines waste some work.
Electricity
Force
Friction
Power
When you hoist a flag on a flag pole, you are using a(n) _______________.
Inclined Plane
Lever
Pulley
Wedge
A golf club is an example of a machine because __________________.
It increases force
It decreases force
It reduces friction
It is 100% efficient
Actual mechanical advantage is always less than ideal mechanical advantage because of friction.
True
False
The lower the efficiency, the better a machine works.
True
False
A simple machine that might be thought of as an inclined plane is a ramp.
True
False
There are no examples of levers on the human body.
True
False
The sharp head of an ax is an example of a _______________.
Inclined Plane
Pulley
Wedge
Wheel and Axel
Friction can be both helpful and harmful to a machine.
True
False
A flat, sloped surface is a _______________.
Fulcrum
Inclined Plane
Lever
Screw
A device that is thicker on one end is a ________________.
Inclined Plane
Lever
Screw
Wedge
A rigid bar that rotates on a fixed point ___________________.
Fulcrum
Inclined Plane
Lever
Screw
An inclined plane wrapped around a cylinder is a(n) _______________.
Fulcrum
Inclined Plane
Screw
Wedge
The fixed point a lever pivots around is a(n) _________________.
Fulcrum
Inclined Plane
Lever
Screw
How many seconds is the object not changing velocity?
1
2
4
6
The dependent variable in this graph is _______________.
Acceleration
Speed
Time
Velocity
The independent variable in this graph is _______________.
Acceleration
Speed
Time
Velocity
