Unit 2 Laws of Motion Test

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Gravity is a

speed

force

velocity

weight

If an equal force acts on each of the following objects, which will have the GREATEST acceleration?

a baseball

a football

a soccer ball

a golf ball

Inertia explains why

friction can be overcome for all objects

the ground pushes against your feet when you run

gravitational forces are stronger on Earth than on the Moon

people in a car move forward in their seats when the car stops quickly

An object is accelerated when it is acted on by

an unbalanced force

velocity

a balanced force

inertia

In which situation are the forces operating on an object unbalanced?

a baseball falls at a faster and faster speed

two sides of a balance both support 20 kg

a car has a constant motion of 60 miles per hour

a stack of books rest on a table

Which of the following is NOT a force?

Inertia

Friction

Newton

Gravity

Newton's first law of motion states that an object's motion will not change unless

a force continues to be applied to the object

the object has no inertia

the net force acting on it is greater than zero

its inertia is stronger than the applied force

Overcoming an object's inertia always requires a(n)

two of the above

large mass

massive force

unbalanced force

It is more difficult to start a 50-kg box sliding across the floor than a 5-kg box because the 50-kg box has greater

velocity

inertia

volume

mass

An object's velocity will not change unless it is acted on by a(n)

strong force

net force

opposite but equal force

unbalanced force

Which force slows a skateboard when a skateboarder puts a foot down to brake?

friction

motion

gravity

inertia

If two arm wrestlers exert a force on each other's hands, and the hands don't move, the forces must be

weak

unbalanced

balanced

strong

The first law of motion says that an object at rest will remain at rest unless...

it is placed on a flat surface

an outside forces acts on it

a nearby star acts on it

it continues in a straight line

According to the third law of motion, for every action there is...

a movement in all directions

a force sending it backward

a greater force pushing on it

an equal and opposite reaction

If one car moves ahead of another car that is traveling in the same direction, do the cars have the same velocity?

No, they are traveling in different directions

Yes, they are traveling in the same direction

No, the cars are traveling at different speeds

Yes, the direction and speed of the cars is the same

Do two skaters traveling in different directions at the same speed have the same velocity?

Yes, because the speed is the same

No, because the direction is different

Yes, because the acceleration is the same

No, because the skaters are different

A pull or push that acts on an object is called a(n)

speed

acceleration

gravity

force

_________________ is the pull that all objects exert on each other.

friction

resistance

gravity

inertia

Gravity is a 

speed

force

velocity

weight

If an equal force acts on each of the following objects, which will have the GREATEST acceleration?

a baseball

a football

a soccer ball

a golf ball

Inertia explains why

friction can be overcome for all objects

the ground pushes against your feet when you run

gravitational forces are stronger on Earth than on the Moon

people in a car move forward in their seats when the car stops quickly

An object is accelerated when it is acted on by

an unbalanced force

velocity

a balanced force

inertia

In which situation are the forces operating on an object unbalanced?

a baseball falls at a faster and faster speed

two sides of a balance both support 20 kg

a car has a constant motion of 60 miles per hour

a stack of books rest on a table

Which of the following is NOT a force?

Inertia

Friction

Newton

Gravity

Newton's first law of motion states that an object's motion will not change unless

a force continues to be applied to the object

the object has no inertia

the net force acting on it is greater than zero

its inertia is stronger than the applied force

Overcoming an object's inertia always requires a(n)

two of the above

large mass

massive force

unbalanced force

It is more difficult to start a 50-kg box sliding across the floor than a 5-kg box because the 50-kg box has greater

velocity

inertia

volume

mass

An object's velocity will not change unless it is acted on by a(n)

strong force

net force

opposite but equal force

unbalanced force

Which force slows a skateboard when a skateboarder puts a foot down to brake?

friction

motion

gravity

inertia

If two arm wrestlers exert a force on each other's hands, and the hands don't move, the forces must be 

weak

unbalanced

balanced

strong

The first law of motion says that an object at rest will remain at rest unless...

it is placed on a flat surface

an outside forces acts on it

a nearby star acts on it

it continues in a straight line

According to the third law of motion, for every action there is...

a movement in all directions

a force sending it backward

a greater force pushing on it

an equal and opposite reaction

If one car moves ahead of another car that is traveling in the same direction, do the cars have the same velocity?

No, they are traveling in different directions

Yes, they are traveling in the same direction

No, the cars are traveling at different speeds

Yes, the direction and speed of the cars is the same

Do two skaters traveling in different directions at the same speed have the same velocity?

Yes, because the speed is the same

No, because the direction is different

Yes, because the acceleration is the same

No, because the skaters are different

A pull or push that acts on an object is called a(n)

speed

acceleration

gravity

force

_________________ is the pull that all objects exert on each other.

friction

resistance

gravity

inertia