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True

Displacement includes both distance and direction.

False

Motion occurs when there is a change in speed.

False

If you were trying to get out of the way of a storm, you would need to know the speed at which it was moving.

False

The total distance traveled divided by the constant speed is the average speed.

True

The relationship s= d/t can be used to calculate speed, distance, or time.

True

Acceleration occurs when speed changes.

False

If you roll a ball up a hill, it undergoes positive acceleration.

False

When you push on a sled and it begins to go downhill, you cause negative acceleration.

True

Acceleration is calculated by dividing change in velocity by total time.

False

When the forces acting on an object are unbalanced, the net force is zero.

False

An object in motion at a constant velocity will change its motion only if a balanced force acts on it.

True

In a car crash, inertia could cause you to crash into the windshield

True

Unbalanced forces acting on an object cause the object to accelerate.

True

Gravity causes all falling objects to accelerate at a rate of 9.8 m/s/s.

True

Acceleration is defined as the rate of change of velocity.

True

Terminal velocity is the highest velocity that will be reached by a falling object.

False

The momentum of a 5,000-kg truck that is standing still is greater than the momentum of a 3,000-kg truck that is also at rest.

True

When an object falls, it is reacting to the force of gravity.

False

Madison is on a merry-go-round that is moving at a constant speed. Her velocity is also constant.

True

Momentum is a property of an object and can be transferred from that object to another object.

True

Objects in Earth's orbit appear to be weightless because they are in free fall.

True

Friction is a force that resists motion between two surfaces that are touching each other.

True

Fractional distillation is the separation of petroleum into its individual carbon compounds.

True

A peptide containing a large number of amino acids is called a protein.

False

Lipids control the production of proteins.

True

When a peptide contains a large number of amino acids, the material is called a protein.

True

Most of the important biological compounds in your body are polymers.

False

Compounds containing carbon are inorganic compounds.

False

Cholesterol is made of monomers of the sugar glucose.

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