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The unit for force is:

A

N

B

F

C

kg

D

Nm

There are 2 Forces working on an object. When is the resulting force zero?

A

When the forces are working in the same direction

B

When the forces are opposites

C

When the forces have te same magnitude

D

When they are the same magnitude and opposite to each other

Dog A is pulling with a force of 60 N and dog B is pulling in the opposite direction with a force of 75 N

What is the resultant force?

What is the resultant force?

A

15 Newton to dog A

B

75 Newton to dog B

C

60 Newton to dog A

D

15 Newton to dog B

The symbol for speed is

A

s

B

v

C

m/s

D

km/h

time can be calculated with the following formula

A

t= v/s
time = speed / distance

B

t = s/v
time = distance /speed

C

t = s x v
time = distance * speed

D

t = s + v
time = distance + speed

Convert 100 km/h to m/s?

A

27,8 m/s

B

360 m/s

C

103,6 m/s

D

96,4 m/s

Tugra is at a traffic light. As soon as it hits green, he starts to speed up on his bike. He accelerates with 5 m/s2.

What is his speed after 4 seconds?

What is his speed after 4 seconds?

A

9 m/s

B

1 m/s

C

20 m/s

D

1,25 m/s

convert 18 m/s to km/h

A

14,4 km/h

B

65 km/h

C

5 km/h

D

21,6 km/h

The mass of Siem is 45 kg. What is his gravitational force, Fg

A

350 N

B

45 N

C

441 N

D

882 N

How far did this object travel after 16 seconds?

A

500 km

B

1000 km

C

0 km

D

300 km

A car is accelerating for 8 seconds, increasing by 20 m/s every second. What is his final speed?

A

28 m/s

B

160 m/s

C

2,5 m/s

D

12 m/s

How can we calculate mass when knowing acceleration and force?

A

m = F.a

B

m = F/a

C

m = F + a

D

m = a/F

What kind of movement wil happen here

A

constant speed downwards

B

constant speed upwards

C

deceleration downwards

D

deceleration upwards

|What will the formula for distance be when we know work and force?

A

W = f/s

B

s= W/F

C

s = F/W

D

W = F+s

What formulas from this chapter do you remember?

a carengine has to do work to get it to move. If the resultant force on the car is 500 N, how much work must be done to get it to go 250 m?

A

2 J

B

125000 J

C

750 J

D

0,5 J

F=m x a

F = m x g

W = F x s

a = v/t

V=s/t

E= P x t

Work

Resultant force

Gravitiational force

acceleration

Velocity

Energy