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Which consequences does the racket experience as a result of the ball?

A

Plastic deformation

B

Elastic deformation

C

Change of direction

D

Change of speed

Four students are doing a tug of war.

Marlon and Josh both pull to the left with a force of 500 N, Nynke pulls to the right with a force of 400 N and Melek pulls to the right with a force of 150 N.

Two claims are made:

I Marlon and Josh win,

II The resultant force is 50 N.

Which is correct?

Marlon and Josh both pull to the left with a force of 500 N, Nynke pulls to the right with a force of 400 N and Melek pulls to the right with a force of 150 N.

Two claims are made:

I Marlon and Josh win,

II The resultant force is 50 N.

Which is correct?

A

Claim I

B

Claim II

C

Both

D

None

If you compare Jupiter to the earth the following rule applies;

A

The mass remains the same

B

The weight remains the same

C

The mass is bigger on Jupiter

D

The weight is bigger on Jupiter

Engine Force

Friction

Force of gravity

The weight is a force. Which is the unit of force?

A

kg

B

N

C

F

How can you calculate the force of gravity

A

Fg = mass x weight

B

Weight = Fg x Mass

C

Fg = weight

D

Fg= mass x 9,6

A bag of potatoes whith a mass of 50 kg has a weight of ...... N

A

250

B

500

C

200

D

400

A plane is standing still on the ground. What can you say about the resulting force?

A

The resulting force is directed towards the front.

B

The resulting force is directed towards the back.

C

The resulting force is 0 N

D

Nothing

A plane is flying with a constant speed through the air. What can you say about the resulting force?

A

The resulting force is directed towards the front.

B

The resulting force is directed towards the back.

C

The resulting force is 0 N

D

Nothing

In which direction is the resulting force?

A

B

A force of 3 N which work perpendicular on a force of 5 N. Calculate the resulting force.

A

4,0 N

B

5,2 N

C

5,8 N

D

6,0 N

There are 2 dynamometers. The first one has a measuring range of 1 N and the second one has a measuring range of 5 N. Calculate which dynamometer contains the stiffest spring.

What is the resulting force?

A

290 N to the right

B

290 N to the left

C

50 N to the right

D

50 N to the left

Forces can be measured with a

A

Scale

B

dynamometer

C

thermometer

You suspend a weight of 100 g on a dynamometer. What value will the dynamometer show?

A

1 N

B

10 N

C

100 N

D

1000 N

Calculate the mass of a calculater when this calculater is hung on a dynamometer which shows 1 N as a result.

A

0,10 kg

B

10 kg

C

1,0 kg

D

10 g

Which kind of force is used here?

A

Magnetic force

B

Electric force

C

Force of gravity

D

Sticky force

Which kind of force is used here?

A

Magnetic force

B

Electrical Force

C

Force of gravity

D

Tension force

The force which works opposite to Fg is

A

friction

B

normal force

C

electrical force

D

Tension force

Where is the center of mass located in the picture?

A

A

B

B

C

C

D

D

A bycilcle is more stable when the center of mass is located higher. hoger komt te liggen.

A

True

B

False

An object is stable when the center of mass is located above the supporting surface.

A

true

B

false

When you draw a force (as an arrow) you need to take 3 properties into consideration. Which 3 are those?

A

Direction, length, point of application

B

Thickness, length, point of application

C

Direction, length, center of mass

D

Thickness, length, center of mass

With which formula can you calculate the spring constant?

A

C=xF

B

C=Fx

C

F=xC

D

C⋅F=x

What is the Si-unit for the spring constant?

A

k

B

kg/m

C

N/cm

D

N/m

Would the line in the graph go more or less steep if the spring constant is higher?

A

Steeper

B

Less steep

Calculate the spring constant by using the graph

A

50 N/m

B

2 N/m

C

-50 N/m

D

-2 N/m

A spring has a length of 23,2 cm. When 250 g is hung on it it extends to 31,8 cm. Calculate the spring constant

A

0,28 N/cm

B

028 N/m

C

29 N/cm

D

29 N/m

A block is suspended on a spring. Is the first law of newton working?

A

Yes

B

No

When it snows the breaking distance is longer. How is this possible?

A

The air resistance has been reduced

B

The air resistance has been increased

C

The sliding resistance has been reduced.

D

The sliding resistance has been increased.

Which is not a resisting force?

A

Breaking force

B

Pushing force

C

Air friction

D

Rolling friction

What is the value of the air friction when the car drives with a constant speed?

A

1000 N

B

1500 N

C

2000 N

D

2500N

A cyclist is cycling up a mountain. Which is the resisting force?

A

Force of gravity

B

Rolling friction

C

Air resistance

D

All 3