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WorksheetsPhysics Unit Test
Total questions: 60
Worksheet time: 30mins
What is the name of the pulley system shown?
Fixed pulley
Movable pulley
Compound pulley
Open drive pulley
Crossed drive pulley
This 2000 N weight is raised 1 meter by pulling 4 meters of rope. What force was required to pull the rope?
An effort of 450 newtons is applied to this pulley. What is the force of the load that will be lifted?
450
600
750
900
What is the mechanical advantage of this pulley system?
4
6
8
10
A force acting on an object does no work if
A. a machine is used to move the object.
B. the force is not in the direction of the object’s motion.
C. the force is greater than the force of friction.
D. the object accelerates.
What is the speed of a bobsled whose distance time graph indicates that it traveled 100 m in 25 seconds?
A. 4 m/s
B. 0.25 mph
C. 250 m/s
D. 100 m/s
What is the SI unit of pressure?
A. a pascal
B. a newton
C. g/cm3
D. m/s2
The amount of matter in an object is called its
A. Inertia
B. balance.
C. Force
D. mass.
The force that one surface exerts on another when the two rub against each other is called
A. gravity.
B. inertia.
C. friction.
D. acceleration.
An object that travels around another object in space is called a(n)
A. satellite.
B. inertia.
C. projectile.
D. mass.
When you know both the speed and direction of an object’s motion, you know the
A. average speed of the object.
B. acceleration of the object.
C. distance the object has traveled.
D. velocity of the object.
What is transferred by a force moving an object through a distance?
A. Motion
B. energy
C. force
D. mass
The SI unit of power is the
A. joule
B. newton.
C. watt.
D. newton-meter.
The basic SI unit of length is the
A. inch.
B. meter.
C. foot.
D. mile.
Based on your knowledge of energy conservation, which of the following statements is true?
A. Manufacturers can increase a light bulb’s energy efficiency by using technology that increases the amount of electromagnetic energy the bulb converts from a given amount of electrical energy.
B. Energy can be conserved by turning off lights when they are not in use.
C. both a and b
D. neither a nor b
Which of the following is an example of exerting a force?
A. a train speeding down a track
B. a carpenter hammering a nail
C. a child running through a field
D. an airplane soaring through the sky
One way to increase acceleration is by
A. decreasing force.
B. increasing mass.
C. decreasing mass.
D. increasing both force and mass proportionally.
In order to calculate pressure exerted on a surface, what quantity is divided by the surface area?
A. Force
B. volume
C. mass
D. altitude
Speed is the ratio of the distance an object moves to
A. the displacement of the object.
B. the motion of the object.
C. the amount of time needed to travel the distance.
D. the direction the object moves.
An inclined plane reduces the effort force by
A. reducing the work.
B. reducing the effort distance.
C. increasing the work.
D. increasing the distance through which the force is applied.
The energy of motion is called
A. thermal energy.
B. work.
C. kinetic energy.
D. potential energy.
An ax is an example of a(an)
A. lever.
B. wedge.
C. inclined plane.
D. wheel and axle.
If you exert a force of 10.0 N to lift a box a distance of 0.75 m, how much work do you do?
A. 75 J
B. 7.5 J
C. 0.075 J
D. 10.75 J
Which of the following increases when an object becomes warmer?
A. chemical energy
B. thermal energy
C. elastic potential energy
D. nuclear energy
According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail
A. disappears into the wood.
B. exerts an equal force back on the hammer.
C. moves at a constant speed.
D. creates a friction with the hammer.
The power of a machine measures
A. its strength.
B. the work it does
C. its rate of doing work.
D. the force it produces.
Which of the following materials conducts heat well?
A. plastic
B. metal
C. wood
D. glass
When a pair of balanced forces acts on an object, the net force that results is
A. greater in size than one of the forces.
B. equal to zero.
C. equal in size to one of the forces.
D. greater in size than both forces combined.
According to Newton’s second law of motion, the acceleration of an object equals the net force acting on the object divided by the object’s
B. momentum.
A. mass.
C. velocity.
D. weight.
Which of the following materials will sink in water? (The density of water 1.00 g/cm3.)
A. cooking oil (0.82 g/cm3)
B. balsa wood (0.12 g/cm3)
C. ethanol (0.798 g/cm3)
D. steel (7.18 g/cm3)
A machine is classified as a compound machine if it
A. has moving parts.
B. is made up of two or more simple machines that operate together.
C. is very efficient.
D. has an IMA greater than 1.
Energy from the sun reaches Earth mostly by
A. convection
. B. conduction
. C. thermal expansion.
D. radiation.
Which of the following universal forces is the most effective over long distances?
A. Gravitational
B. strong nuclear
C. magnetic
D. electric
If a bicyclist travels 30 kilometers in two hours, her average speed is _______________.
A. 60 km/h.
B. 2 km/h.
C. 30 km/h.
D. 15 km/h.
Speed equals distance divided by __________
A. velocity.
B. motion.
C. size.
D. time.
The force that pulls falling objects toward Earth is called
A. air resistance.
B. acceleration.
C. gravity.
D. free fall.
Newton’s third law of motion describes
A. net force.
B. centripetal forces.
C. balanced forces.
D. action and reaction forces.
The kinetic energy of the pendulum bob in Figure 15-1 increases the most between locations
A. A and C.
B. B and D.
C. C and D.
D. A and B.
Which of the following is a unit of temperature?
A. calorie
B. Celsius degree
C. Joule
D. kilogram
How can a machine make work easier for you?
A. by changing the direction of your force
B. by decreasing the amount of work you do
C. by increasing the work done by the machine
D. none of the above
The SI unit of force is the
A. meter.
B. joule.
C. kilogram.
D. newton.
A horizontal line on a distance-time graph means the object is
A. moving at a constant speed.
B. moving faster.
C. at rest.
D. slowing down.
A mechanical device requires 400 J of work to do 340 J of work in lifting a crate. What is the efficiency of the device?
A. 0.9%
B. 85%
C. 60%
D. 118%
What is the momentum of a 50-kilogram ice skater gliding across the ice at a speed of 2 m/s?
A. 25 kg. m/s
B. 48 kg . m/s
C. 50 kg
D. 100 kg. m/s
Which of the following is an example of a wheel and axle?
A. a pencil
B. a jar lid
C. a doorknob
D. an automobile steering wheel
Which of these is an example of deceleration?
A. a roller coaster moving down a steep hill
B. an airplane following a straight flight path
C. a bird taking off for flight
D. a car approaching a red light
An orange might roll off your cafeteria tray when you stop suddenly because of
A. the friction forces acting on the orange.
B. the balanced forces acting on the orange.
C. the centripetal force acting on the orange.
D. the orange’s inertia.
The energy stored in gasoline is
A. nuclear energy.
B. chemical energy.
C. electromagnetic energy.
D. mechanical energy.
Which example identifies a change in motion that produces acceleration?
A. a ball moving at a constant speed around a circular track
B. a speed skater moving at a constant speed on a straight track
C. a particle moving in a vacuum at constant velocity
D. a vehicle moving down the street at a steady speed
When an unbalanced force acts on an object,
A. the object’s motion does not change
. B. the inertia of the object increases.
C. the weight of the object decreases.
D. the object accelerates.
What is the reason copper and aluminum are used for electrical wiring?
A. Copper and aluminum are conductors.
B. Copper and aluminum are insulators.
C. Copper and aluminum are semiconductors.
D. Copper and aluminum are magnetic
A student was asked how the current in the circuit shown above could be stopped without using the switch. He answered that the only way to stop the current was to disconnect the battery. What was wrong with the student’s response?
A. Disconnecting the battery will not stop the current.
B. Removing the fuse will also stop the current.
C. Disconnecting the lightbulb will also stop the current.
D. There is no way to stop the current without using the switch.
What is the main similarity between longitudinal and transverse waves?
A. Both involve up-and-down displacement of particles.
B. Both involve back-and-forth displacement of particles.
C. Both involve compressions in which particles are pushed together.
D. Both involve the transfer of energy through matter or space.
Heat energy can be transferred from one object to another. In summer, when you hold an ice-cold can of soda against your face, your face feels cooler. However, what is really happening is that the can is being warmed by heat from your body. You are actually losing a little body heat. Which of the following is an unstated assumption related to the paragraph?
A. Heat can be transferred.
B. Coldness cannot be transferred.
C. A cool object can be warmed by your body.
D. You can lose body heat.
A student wants to test how different types of flooring affect the motion of a toy car. Which of the following would be the best design for an experiment?
A. Choose 3 cars with equal masses. Push cars down a ramp onto 3 different types of flooring. Observe the car that traveled the farthest on each type of flooring.
B. Choose 3 cars with different masses. Allow cars to roll down a ramp onto 3 different types of flooring. Observe the car that traveled the farthest on each type of flooring.
D. Choose 3 cars with different masses. Push cars down a ramp onto 3 different types of flooring. Observe the distance traveled by each car on each type of flooring
C. Choose 3 cars with equal masses. Allow cars to roll down a ramp onto 3 different types of flooring. Observe the distance traveled by each car on each type of flooring.
Which of the following tasks is NOT considered work?
A. trying to turn on a stuck water faucet
B. pushing a wheelbarrow over a flat lawn
C. rolling a trash can down a steep driveway
D. dragging a bag of raked leaves behind you
A truck is traveling down the highway at a speed of 65 miles per hour. Which other piece of information is needed to determine the truck’s momentum?
A. truck’s mass
B. distance traveled
C. truck’s acceleration
D. amount of travel time
Which object has the greatest momentum: a 60-gram tennis ball traveling at 20 meters per second or a 600-gram basketball traveling at 2 meters per second?
A. the basketball
B. the tennis ball
C. neither ball has momentum
D. their momentum is the same
Which type of radiation would be most appropriate to use to boil water?
A. visible light
B. ultraviolet
C. gamma rays
D. microwaves
Photosynthesis is ( exothermic or endothermic reaction) while cellular respiration is ( exothermic or endothermic reaction).
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