Newton

1.

1 point

Newtons Second Law

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

acceleration of an object is dependent upon two things - the net force acting upon the object and the mass of the object.

2.

1 point

Newtons first law

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

acceleration of an object is dependent upon two things - the net force acting upon the object and the mass of the object.

3.

1 point

According to Newtons Second Law

If there is a net force on an object, the object accelerates.

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

4.

1 point

Newtons Second Law says If there is a net force on an object,
the object accelerates. Which 3 things apply to the acceleration

Its acceleration is in the same direction as the net force.

Its acceleration is directly proportional to the objects mass

Its acceleration is inversely proportional to the net force

Its acceleration is inversely proportional to the objects mass

Its acceleration is inversely proportional to the direction as the net force.

Its acceleration is directly proportional to the net force

5.

1 point

directly proportional means:

If the object?s mass doubles, its acceleration will be half as much.

If the net force doubles, the acceleration triples.

If the net force doubles, the acceleration doubles.

6.

1 point

inversely proportional
means:

If the net force doubles, the acceleration triples.

If the net force doubles, the acceleration doubles.

If the objects mass doubles, its acceleration will be half as much.

7.

1 point

Newtons Second Law

Both are correct

a = f/m

f=m.a

8.

1 point

Preconceptions means

facts

jumping to conclusions

the truth

9.

1 point

Mass is the same as weight.

True

False

10.

1 point

Force is not the same as pressure.

True

False

11.

1 point

Mass and weight are not the same.

True

False

12.

1 point

Pressure and force are the dame

True

False

13.

1 point

Weight is a force

True

False

14.

1 point

weight of an object depends on the objects mass.

True

False

15.

1 point

Weight is a force. What does this mean?

Weight is an interaction between 2 objects involving a push or a pull.

Weight is objects is a typically VERY big object what is heavy

16.

1 point

Weight is a property of an object.

True

False

17.

1 point

The weight of an object depends on the
object?s

force

weight

mass

18.

1 point

an objects weight is

inversely proportional to the object?s mass.

directly proportional to the object?s mass.

directly proportional to the object?s weight.

19.

1 point

The weight of an object depends on 2 of the following

force and location

Mass and location

mass and speed

20.

1 point

an objects weight is directly proportional to 2 of the following

Mass

its force, g at its current location.

its free fall acceleration, g at its current location.

pull and push

21.

1 point

Weight

w=m.a

w=m.g

w-f/m

22.

1 point

g stands for gravity. What is it?

free fall acceleration anywhere even on the moon

mass

free fall acceleration on earth

23.

1 point

the weight of an object is the same on earth, on the moon or anywhere

True because The weight of an object does not depend on the objects location.

False, because The weight of an object also depends on the objects location.

both are not true

24.

1 point

The free fall acceleration of an object on earth is 9.8 m/s2 on earth and 1.6 m/s2 on the moon. If the mass of the object is 2 kg, what is the weight on earth?

3.2N

9.8N

19.8N

25.

1 point

The free fall acceleration of an object on earth is 9.8 m/s2 on earth and 1.6 m/s2 on the moon. If the mass of the object is 2 kg, what is the weight on the moon?

9.8N

3.2N

19.8N

26.

1 point

Which one is true about why heavy object are difficult to accelerate?

an object is difficult to accelerate because it is heavy or has mass

an object is difficult to accelerate because it is heavy or has weight

27.

1 point

What is the mass of an object with a weight of 49N on earth"

480.2kg

5Kg

0.2kg

28.

1 point

What is the mass of an object with a weight of 16N on the moon"

10Kg

1.633kg

25.6kg

29.

1 point

What is the mass of an object falling with a force of 49N on earth"

25.6kg

5Kg

480.2kg

30.

1 point

What is motion?

acceleration

Speed of an object

is any object that is moving.

31.

1 point

we describe motion in 3 ways:

HOW it moved

SPEED

Time it took to move

ACCELERATION

DIRECTION

FORCE

32.

1 point

HOW does something move?

Apply force to it

apply momentum

Apply distance and time

33.

1 point

What is force

push or a pull

momentum

speed

34.

1 point

Select 2 answers that are correct: An object will stop when

when you stop pushing it

force acts in the opposite direction to and stops it.

it loses speed or “momentum

35.

1 point

Friction is when 2 objects rub together

True

False

36.

1 point

GRAVITY pulls objects DOWN

True

False

37.

1 point

Newton’s 1st Law of Motion

An object at rest remains at rest unless acted on by another force

If there is a net force on an object, the object accelerates

38.

1 point

which two are part if Newton’s 1st Law of Motion

An object in motion in a straight line tends to say in motion in a straight line unless acted upon by another force.

An object at rest remains at rest unless acted on by another force

If there is a net force on an object, the object accelerates.

If the object’s mass doubles, its acceleration will be half as much.

39.

1 point

An object at rest (still) will…

Remain at rest until a force acts on it or something makes it move

Start moving by itself

Push or pull itself

40.

1 point

Your paper airplane lands because of…?

No wind

Friction

Gravity

41.

1 point

What is the acceleration of an object with a force of 150N and mass of 6KG. Make sure you answer is written in m/sec2

42.

1 point

What is the mass (kg) of a 744N object accelerating at 24m/sec2

43.

1 point

What is the mass (Kg) of a 3920 Newton desk?

44.

1 point

What is the weight of a 700 kg boat in Newton's (N)?

45.

1 point

What is the weight of a 75 kg. Mass?

46.

1 point

A force of 64 N is applied to an 8 kg. Mass. What is the acceleration of the mass?

47.

1 point

If a force of 50N is applied to a shopping kart towards the north and another force 30N is applied to the same kart towards the south, what will the net force be and in which direction will the kart go?

Net force of 20N and the kart will move towards the North

Net force of 80N and the kart will move towards the North

Net force of 20N and the kart will move towards the South

Net force of 80N and the kart will move towards the South

48.

1 point

Willie pushed on the shopping cart with 10N of force towards the east. James pulled the rope attached to the same cart with 20N towards the same direction. Biff pushed on the cart with 40N of force towards the west. What will
happen to the cart and why?

The cart will move towards the east because the net force is 10 towards the east

The cart will move towards the west because the net force is 70 towards the west

The cart will move towards the east because the net force is 70 towards the east

The cart will move towards the west because the net force is 10 towards the west

49.

1 point

In a tug-of-war between 2 dogs, a bull dog pulling at 100N and a chiwawa pulling at 110N, which dog would win?

the bull dog because the net force of 210N is in its direction

the chiwawa because the net force of 10N is in its direction

the bull dog because the net force of 10N is in its direction

the chiwawa because the net force of 210N is in its direction

50.

1 point

How much force is required to stop a cart rolling down the slop with a force of 200N?

190N

500N

200N

210N