TEST Chapter 5: Force and motion (Nova 3HV TTO)

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 3

Chapter 5: Force and motion

Multiple choice

&  drag and drop (18 x)

Symbol for force

Symbol for mass

Unit for force

Unit for weight

Unit for mass

m

kg

F

N

N

You are pushing with a force of 150 N
against a box to your right.
It does nog move.
What will then be the frictional force?

1. 150 N to the right
2. 150 N to the left
3. more than 150 N to the right
4. more than 150 N to the left

The acceleration can only be a positive number

1. True
2. False

When the netforce is zero,
an object can't move anymore

1. True
2. False

stoppingdistance = reaction distance + brakingdistance

Mass has an influence on:

1. Only on the brakingdistance
2. Only on the reaction distance
3. Only on the brakingdistance and the stoppingdistance
4. Only on the reactiondistance and the stoppingdistance

stoppingdistance = reaction distance + brakingdistance

You starting speed has an influence on:

1. Only on the brakingdistance
2. Only on the reaction distance
3. Only on the brakingdistance and the stoppingdistance
4. On the brakingdistance, reaction distance and the stoppingdistance

stoppingdistance = reaction distance + brakingdistance

The effects of using drugs
could have an influence on what distance?

1. brakingdistance + stoppingdistance
2. reactiondistance + stoppingdistance
3. every distance
4. reactiondistance + brakingdistance

Which choice does not really have a lowering effect
on the brakingforce you experience
on your body during a collision?

1. Safety belt
2. Crumple zone
3. Cage construction
4. Airbag

Veilig Verkeer Nederland advices you to always
keep a "safety distance" of 2 seconds
to the vehicle in front of you.

What distance do you need to keep in between you 

and the other vehicle while driving 50 km/h ?

1. 14 meter
2. 20 meter
3. 28 meter
4. 34 meter

Your reaction time depends on?

1. just your age, concentration and tiredness
2. just your age, tiredness, alcohol and drugs
3. just your tiredness, concentration, age and the use of alcohol and medication
4. just on the use of alcohol and medication

Which motion are
really possible?

1. A, B, D, E
2. B, C, D, E
3. A, C, E
4. A, C, D, E

Which of the following motions has a constant velocity?
(1) An object rolling down a ramp.
(2) An object moving in a circle with constant speed.
(3) An object at the bottom of a swing pendulum.
(4) An object travelling in a straight line with constant speed.

1. (2) and (4) only
2. (1), (2) and (4) only
3. (1) and (2) only
4. 4 only

Two runners take part in a race.
The graph shows how the speed of each runner changes in time.

What does the graph tell you
about the runners at time t?

1. Runner 1 has zero acceleration
2. Runner 1 is overtaking runner 2
3. Both runners are moving at the same speed
4. Runner 2 is slowing down

Which of these
timeticker tapes
fits the graph best?

graph

1. A
2. B
3. C
4. D

These graphs show
4 different drivers.

Which driver has the smallest braking distance?

graphs A & B

graphs C & D

1. A
2. B
3. C
4. D

At t= 0 s, the driver sees
a large hole in the road.
He stops the car in time
to prevent any damage.

What will be his stoppingdistance?

1. 30 m
2. 60 m
3. 75 m
4. 90 m

A car (m = 800 kg) drives with a speed of 12 m/s.
Because of a brakingforce of 4000 N
the car comes to a standstill.

How many seconds does it take to come to a standstill?

1. 0,41 s
2. 2,4 s
3. 6 s
4. 12 s

A plane lands with a speed of 180 km/h
Its brakindistance is 350 m.

How long does it take to come
to a complete standstill?

1. 1,9 s
2. 3,8 s
3. 7,0 s
4. 14,0 s

Open questions (5 x)

Mention a couple of factors
which are of influence on the airfriction

Tim approaches a red traffic light. He has his girlfriend on the back of his motorbike. He hits the brakes at the same distance from the lights
with the same force as he normally does.

Is this wise?  Can you explain what will happen and why?

While hitting the gas pedal, the motor exerts a force of 5000 N on the car (m = 1550 kg). Since the total amount of frictional forces at the same time are no more than 2400 N, the car will start to accelerate.

Calculate this acceleration

A boeing 747 is 
making a trip. 

Calculate the distance (in km) travelled

during the first 40 minutes

Upload a photocopy of your calculation

You are driving with a speed of 34 km/h. Suddenly you see little ducks in the middle of the road at a distance of 30 meters. You need 1,8 seconds to react and after hitting the brakes, your car stands still within 2 seconds.

But will you be in time to save them?

MAke a calculation and a graph of this motion + Upload a photo