The SI unit for measuring ____________________ is the meter.

The direction and length of a straight line from the starting point to the ending point of an object’s motion is ____________________.

Displacement and velocity are examples of ____________________ because they have both magnitude and direction.

The sum of two or more vectors is called the ____________________.

Speed is measured in units of ____________________.

A car’s speedometer measures ____________________.

v = d/t is the equation that defines ____________________.

A constant slope on a distance-time graph indicates ____________________ speed.

The difference between speed and velocity is that velocity indicates the ____________________ of motion and speed does not.

A distance-time graph indicates an object moves 20 km in 2 h. The average speed of the object is ____________________ km/h.

Two or more velocities add by ____________________.

A moving object does not ____________________ if its velocity remains constant.

Freely falling objects accelerate at 9.8 m/s² because the force of ____________________ acts on them.

The velocity of an object moving in a straight line changes at a constant rate when the object is experiencing constant ____________________.

The acceleration of a moving object is calculated by dividing the change in ____________________ by the time over which the change occurs.

Accelerated motion is represented by a(an) ____________________ line on a distance-time graph.

A car that increases its speed from 20 km/h to 100 km/h undergoes ____________________ acceleration.

____________________ is how fast a velocity is changing at a specific instant.

A push or pull is an example of a(an) ____________________.

The type of force measured by a grocery store spring scale is ____________________.

The sum of all the forces acting on an object is called the ____________________.

If the forces acting on an object produce a net force of zero, the forces are called:

The force that opposes the motion of objects that touch as they move past each other is called __________________________.

It usually takes more force to start an object sliding than it does to keep an object sliding because static friction is usually __________________________ than sliding friction.

The two forces acting on a falling object are gravity and __________________________.

When a falling object reaches terminal velocity, the net force acting on it is __________________________.

The drag force acting on a falling sky diver is also known as __________________________.

The path of motion of a thrown javelin is an example of __________________________ motion.

The tendency of an object to resist any change in its motion is called __________________________.

During a head-on auto collision, __________________________ causes a passenger in the front seat to continue moving forward.

The acceleration of an object is equal to the net __________________________ acting on the object divided by the object’s __________________________.

The force of gravity acting on an object is the object’s __________________________.

If a golf ball and bowling ball are rolling at the same speed, the __________________________ ball has greater momentum.

When you push on a wall, the __________________________ pushes back on you.

In a closed system, the loss of momentum of one object __________________________ the gain in momentum of another object.

The observation that a charged object can attract or repel other charged objects led scientists to conclude that there are __________________________ types of charges.

The universal force that is most effective over the longest distances is __________________________.

The centripetal force acting on the moon continuously changes the __________________________ of the moon’s motion.

For work to be done on an object, the object has to __________________________.

Any part of a force that does not act in the direction of an object’s motion does no __________________________ on an object.

The SI unit of work is the __________________________.

You calculate work by multiplying the force acting in the direction of __________________________ by the distance the object moves.

The rate at which work is done is called __________________________.

What is the SI unit of power?

The watt and the horsepower are both units of what?

A machine is a device that changes a(n) __________.

A device that changes the size or direction of force used to do work is called a(n) __________.

The force that is exerted on a machine is called the __________ force.

Besides a reduction in friction, the only way to increase the amount of work output of a machine is to __________ the work input.

The __________ of a machine is the number of times that the machine increases the input force.

The mechanical efficiency of any machine is always __________ than 100 percent.

A(n) __________ can be described as an inclined plane wrapped around a cylinder.

The fulcrum is always between the effort force and the resistance force in a(n) __________-class lever.

What class lever is the bottle opener shown in Figure 14-1?

The ideal mechanical advantage of a third-class lever is always __________ than 1.

As the thickness of a wedge of given length increases, its IMA __________.

Two or more simple machines working together make up a(n) __________ machine.

Energy of an object increases when __________ is done on the object.

Energy and work are measured in the SI unit called the __________.

If the __________ of an object doubles, its kinetic energy doubles.

The kinetic energy of an object is proportional to the square of its __________.

Energy that is stored due to position or shape is called __________ energy.

When a pole-vaulter flexes the pole, the pole-vaulter increases the pole’s __________ potential energy.

You can calculate an object’s gravitational potential energy by using the equation __________.

The sum of the kinetic energy and potential energy of an object is called its ____________________ energy.

All energy can be considered as kinetic energy, ____________________ energy, or the energy in fields.

Wind turbines convert ____________________ energy into electrical energy.

The process of changing energy from one form to another is called energy ____________________.

“Energy cannot be created or destroyed” is a statement of the law of _______________________________.

When an apple falls from a tree to the ground, the apple’s beginning kinetic energy and ending gravitational potential energy are both equal to ____________________.

In Figure 15-1, the kinetic energy of the pendulum bob decreases between locations B and ____________________.

The electric field around a positive charge points ____________________ the charge.

Electric force is ____________________ proportional to the amount of charge and ____________________ proportional to the square of the distance between the charges.

Like charges ____________________ and opposite charges ____________________.

When a pathway through which charges can move forms suddenly, ____________________ occurs.

The SI unit of electric current is the ____________________.

Scientists usually define the direction of current as the direction in which ____________________ charges would flow.

Wood, plastic, and rubber are good electrical ____________________, and copper is a good electrical ____________________.

The SI unit of resistance is the ____________________.

A material that has almost zero resistance when it is cooled to low temperatures is a(an) ____________________.

Potential difference is measured in __________________________.

A complete path through which charge can flow is an electric ______________________.

To calculate power, multiply voltage measured in __________________ by __________________ measured in amps.

The transfer of excess charge through a conductor to Earth is called ____________________.

What is the formula for gravitational potential energy?

What is the SI unit for work?

Which of the following is a unit of speed?

What is the acceleration due to gravity on Earth, as given in the material?

Which term refers to the rate at which work is done?

What is the formula for average velocity?

Which of the following is a vector quantity?

What is the SI unit for force?

Which of the following is a formula for acceleration?

What is the SI unit for electric current?

What is the formula for acceleration?

If a net force of 900 N is applied to a mass of 750 kg, what is the acceleration?

What is the formula for weight?

If the mass is 4.2 kg and the acceleration due to gravity is 9.8 m/s², what is the weight?