Quiz about Ch. 1 Review

Question 1

What happens when unbalanced forces act on an object at rest?

Accepted Answer

the object begins moving in the direction of the net force

Answer

the object remains at rest

Answer

the object begins moving in an unpredictable direction

Answer

the object begins moving opposite to the direction of the net force

Question 2

What is the net force on this box?

Accepted Answer

25 N to the right

Answer

20 N to the right

Answer

90 N to the left

Answer

290 N to the left

Question 3

Why is Newton's first law sometimes called the law of inertia?

Accepted Answer

because inertia is the tendency of objects to resist changes to their motion

Answer

because inertia describes the application of force to an object at rest

Answer

because inertia describes the application of force to an object in motion

Answer

because inertia is the same thing as friction

Question 4

In a tug of war, the team on the left pulls with a force of 100 N and the team on the right pulls with a force of 300 N. What is the net force on the rope?

Accepted Answer

200 N to the right

Answer

100 N to the left

Answer

400 N to the right

Answer

200 N to the left

Question 5

Which type of forces will cause a change in an object's motion?

Accepted Answer

unbalanced forces

Answer

inertia

Answer

zero net force

Answer

balanced forces

Question 6

10. For an object moving in a circle, what is the direction of centripetal force?

Accepted Answer

towards the center of the circle

Answer

in the direction of motion of the object

Answer

opposite the direction of motion of the object

Answer

away from the center of the circle

Question 7

Using pg. 2 "Ch. 1.1 Gravity and Friction Summarizing Notes", "twice the mass = twice the ......"

Accepted Answer

weight

Answer

friction

Answer

force

Question 8

Using pg. 14, "Gravity and Friction" what is the answer to #4, What happens to the gravitational attraction between two objects as the distance between them increases?

Accepted Answer

as the distance increases the gravitational attraction decreases

Answer

as the distance increases the gravitational attraction increases

Answer

as the distance decreases the gravitational attraction decreases

Question 9

Using pg. 16 "Ch. 1.2 Newton's 1st Law of Motion", summarize Newton's First law of Motion.

Accepted Answer

an object at rest will stay at rest, an object in motion will stay in motion, unless acted of by an unbalanced force.

Answer

acceleration is equal to the force divided by the mass.

Answer

for every action their is an equal and opposite reaction.

Question 10

Using pg. 17 & 18 "Ch. 1.3 Newton's 2nd Law of Motion", Summarize Newton's second law of Motion.

Accepted Answer

acceleration is equal to the force divided by the mass.

Answer

an object at rest will stay at rest, an object in motion will stay in motion, unless acted of by an unbalanced force.

Answer

for every action there is an equal and opposite reaction.

Question 11

Using pg. 19 Math Skills "Newton's Second Law Equation". What was the answer to #3?

Accepted Answer

5 Kg

Answer

2 m/s2

Answer

2kg

Answer

25N

Question 12

Using pg. 20 "Ch. 1.4 Newton's Third Law Notes", Summarize Newton's third Law of Motion.

Accepted Answer

for every action there is an equal and opposite reaction.

Answer

acceleration is equal to the force divided by the mass.

Answer

an object at rest will stay at rest, an object in motion will stay in motion, unless acted of by an unbalanced force.

Question 13

Using pg. 24 Math Skills "Finding Momentum" what is the answer for #3?

Accepted Answer

10 kg

Answer

6 m/s

Answer

6 kg

Answer

1.5 m/s

Question 14

Using pg. 25 "Crashes & Collisions Ch. 1.4" what happened in the data table for "Type of Collision" #1?

Accepted Answer

the stationary ball moves forward after it's hit and the moving ball stops

Answer

the stationary ball stays still and the moving ball bounces forward

Answer

both balls bounce off of eachother

Question 15

The unit of force is ____.

Accepted Answer

the newton

Answer

m/s

Answer

the hertz

Answer

the joule

Question 16

Forces that change an object's motion by not touching the object are ______ forces.

Accepted Answer

noncontact

Answer

frictional

Answer

contact

Answer

gravitational

Question 17

If a ball was thrown in an environment where there was no gravity or friction, the ball would _______.

Accepted Answer

continue in a straight line

Answer

go straight up

Answer

fall straight down

Answer

follow a curved path

Question 18

Which Newton's law describes force as being equal to the mass of an object multiplied by the acceleration of that object (a= F/m) or (F = m x a)?

Accepted Answer

Newton's second law of motion

Answer

the law of conservation of momentum

Answer

Newton's first law of motion

Answer

Newton's third law of motion

Question 19

A moving object of small mass has ____ than a moving object of large mass.

Accepted Answer

less momentum

Answer

more momentum

Answer

less weight

Answer

greater acceleration

Question 20

Directly proportional to its mass, the amount of ____________ an object has determines how much that object resists change in its motion.

Accepted Answer

inertia

Answer

momentum

Answer

force

Answer

acceleration

Question 21

According to the law of conservation of momentum, the amount of momentum in a system before a collision is ____________ the amount of momentum in that system after a collision.

Accepted Answer

equal to

Answer

greater than

Answer

less than

Answer

more forceful than

Question 22

The girl on the sled will remain in motion unless

Accepted Answer

she is stopped by an outside force.

Answer

her motion is changed by magnetic forces.

Answer

she accelerates at a constant speed.

Answer

the force of friction forcer her to move faster.

Question 23

When a horse stops suddenly, the rider on its back continues to move forward onto the ground. Which law is this?

Accepted Answer

Newton's 1st Law of Motion

Answer

Newton's 2nd Law of Motion

Answer

Newton's 3rd Law of Motion

Question 24

Which law describes this picture?

Accepted Answer

Newton's First Law

Answer

Newton's Second Law

Answer

Newton's Third Law

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