Quiz about 8e.2.2

Question 1

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

Accepted Answer

10 m/s

Answer

1000 m/s

Answer

100 seconds

Answer

10 seconds

Question 2

Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?

Accepted Answer

100 seconds

Answer

400 minutes

Answer

100 minutes

Answer

.25 seconds

Question 3

Which of the following is a unit of time?

Accepted Answer

sec

Answer

mi

Answer

m/s

Answer

km

Question 4

Which of the following is a unit of speed ?

Accepted Answer

m/s

Answer

sec

Answer

mi

Answer

min

Question 5

Which of the following is a unit of distance ?

Accepted Answer

mi

Answer

miles/hr

Answer

s

Answer

min

Question 6

Which of the following is a unit of distance ?

Accepted Answer

km

Answer

miles/hr

Answer

hr

Answer

min

Question 7

Which of the following is a unit of time?

Accepted Answer

hr

Answer

km/hr

Answer

km

Answer

mi

Question 8

Which of the following is a unit of speed?

Accepted Answer

km/hr

Answer

hr

Answer

km

Answer

s

Question 9

A train travels 25 km in .5 hrs. How fast is the train going?

Accepted Answer

50 km/hr

Answer

25 miles/hr

Answer

5 miles/hr

Answer

125 km/hr

Question 10

How long would it take a bus traveling at 50 km/h to travel 125 km?

Accepted Answer

2.5 hours

Answer

6,250 hours

Answer

2.5 km

Answer

6,250 km

Question 11

A bus carrying Ava's friends to a soccer game traveled 10 km in 30 minutes. To determine the average speed of the bus in km/hr, your first step would be to __________?

Accepted Answer

convert minutes to hours

Answer

convert speed to distance

Answer

convert hours to seconds

Answer

convert seconds to hours

Question 12

A bus carrying Ava's friends to a soccer game traveled 10 km in 30 minutes. What was the average speed of the bus in km/hr?

Accepted Answer

20 km/hr

Answer

300 km/hr

Answer

.33 km/hr

Question 13

If I choose to walk to school at a speed of 3mi/h, it will take me 4 hours to arrive. How far away do I live?

Accepted Answer

12 miles

Answer

7 miles

Answer

1 mile

Answer

.75 miles

Question 14

What is speed?

Accepted Answer

how much distance is covered over a period of time

Answer

how far you go

Answer

how fast you accelerate

Answer

the change in the location of a object

Question 15

What does this graph represent?

Accepted Answer

Constant Speed

Answer

Acceleration

Answer

Deacceleration

Answer

Not moving

Question 16

According to the graph how far does the person travel in the first 5 seconds?

Accepted Answer

5 m

Answer

2 m

Answer

10 m

Answer

0 m

Question 17

What is the person doing from 5 seconds to 10 seconds?

Accepted Answer

Standing Still

Answer

Walking

Answer

Running

Answer

Walking Fast

Question 18

What is happening at E?

Accepted Answer

Steady speed; returning to start position

Answer

Stationary

Answer

Accelerating

Answer

Fast steady speed; moving away from the starting position

Question 19

How long did it take this object to travel 10 m?

Accepted Answer

20 s

Answer

0 s

Answer

10 s

Answer

15 s

Question 20

How many times does this object STOP moving?

Accepted Answer

Once

Answer

None

Answer

Twice

Answer

Three times

Question 21

What is the speed of this object at 3 seconds?

Accepted Answer

5 m/s

Answer

45 m/s

Answer

5 s/m

Answer

45 s/m

Question 22

Soccer ball A goes 15 feet in 3 seconds, and ball B goes 12 feet in 2 seconds. Which ball moved the fastest?

Accepted Answer

Soccer ball B

Answer

Soccer ball A

Answer

Their speeds are equal.

Question 23

Paul swims at a speed of 5 km/h for 1.5 hours. Find the distance traveled in km.

Accepted Answer

7.5km

Answer

125km

Answer

120km

Answer

80km

Question 24

Question 24.

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 25

Question 25.

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 26

To calculate average speed you _______ the distance traveled by the elapsed time.

Accepted Answer

divide

Answer

multiply

Answer

square

Answer

subtract

Question 27

Calculate the average speed between 0 and 10 hours.

Accepted Answer

1 km/h

Answer

2 km/h

Answer

3 km/h

Answer

5 km/h

Question 28

What two measurements are necessary for calculating speed?

Accepted Answer

Distance and time

Answer

Mass and time

Answer

Temperature and mass

Answer

Mass and distance

Question 29

Can be measured in seconds (s)

Accepted Answer

Time

Answer

Distance

Answer

Speed

Answer

Acceleration

Question 30

Can be measured in meters (m)

Accepted Answer

Distance

Answer

Time

Answer

Speed

Answer

Acceleration

Question 31

What is the formula to calculate speed?

Accepted Answer

s = d/t

Answer

s = t/d

Answer

s = d x t

Answer

s= t x d

Question 32

Are forces balanced or unbalanced when a car is moving at a constant speed but makes a right turn into a parking lot?

Accepted Answer

Unbalanced

Answer

Balanced

Question 33

Are forces balanced or unbalanced when a marble rolls down a ramp?

Accepted Answer

Unbalanced

Answer

Balanced

Question 34

A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?

Accepted Answer

The cart will speed up.

Answer

The cart will slow down.

Answer

The cart will move at a constant speed in a straight line.

Answer

The cart will fly to never never land!

Question 35

Are forces balanced or unbalanced when a plane is moving at a constant speed in a straight line?

Accepted Answer

Balanced

Answer

Unbalanced

Question 36

Are forces balanced or unbalanced when an ice skater is moving at a constant speed in a straight line?

Accepted Answer

Balanced

Answer

Unbalanced

Question 37

Are forces balanced or unbalanced when skateboarding down a ramp?

Accepted Answer

Unbalanced

Answer

Balanced

Question 38

The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 3 m/s?

Accepted Answer

The boat will slow down.

Answer

The boat will speed up.

Answer

The boat will move backwards.

Answer

The boat will continue sailing to the left at a constant speed of 4 m/s.

Question 39

Are forces balanced or unbalanced when plates at a transform fault move and cause an earthquake?

Accepted Answer

Unbalanced

Answer

Balanced

Question 40

Are the forces acting on the rope balanced or unbalanced?

Accepted Answer

Balanced

Answer

Unbalanced

Question 41

Are the forces acting on the rope balanced or unbalanced?

Accepted Answer

Unbalanced

Answer

Balanced

Question 42

A _____ is a pull or a push.

Accepted Answer

force

Answer

friction

Answer

gravity

Answer

speed

Question 43

Balanced forces can cause

Accepted Answer

an object to stay still or move at a constant speed and direction

Answer

an object to speed up or slow down

Question 44

An unbalanced force can make all of these things happen except...

Accepted Answer

an object just sits there

Answer

a moving object changes direction

Answer

a moving object speeds up

Answer

a moving object stops

Question 45

Which of the following statements is true?

Accepted Answer

Unbalanced forces cause a change in motion.

Answer

Balanced forces cause a change in motion.

Answer

Forces do not effect the change in motion.

Question 46

If all four forces are balanced, the plane will

Accepted Answer

fly at a constant speed and not change direction

Answer

fly faster and faster

Answer

fly slower and slower

Question 47

What is the net force on this box?

Accepted Answer

5 N left

Answer

30 N left

Answer

25 N right

Answer

55 N right

Question 48

The total amount of forces acting on an object is called...

Accepted Answer

Net Force

Answer

Contact Force

Answer

Balanced Force

Answer

Unbalanced Force

Question 49

Which of the following has a net force of 0 Newtons?

Accepted Answer

An asteroid moving at a constant speed and direction through space

Answer

A car slowing down at a stop sign

Answer

A box of dishes falling from a counter

Answer

A rocket taking off

Question 50

Balanced or Unbalanced?

Accepted Answer

Unbalanced

Answer

Balanced

Question 51

Which could be an example of an unbalanced force?

Accepted Answer

A baseball that has just been thrown to home plate.

Answer

A plate sitting on a dining table

Answer

A ball at the top of a hill that is not moving

Answer

A soccer ball kicked in space, traveling at a constant speed in a straight line

Question 52

You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you also push with a force of 25 N right. What is the net force on the couch?

Accepted Answer

60 N right, unbalanced

Answer

10 N left, unbalanced

Answer

60 N right, balanced

Answer

50 N left, balanced

Question 53

Why does a book on a table not move?

Accepted Answer

The forces of the table pushing up and gravity pulling down are balanced

Answer

No forces are acting on the book

Answer

Gravity is the only force acting on the book

Question 54

Calculate the Net Force.

Accepted Answer

60N, Right, unbalanced

Answer

60N, Left unbalanced

Answer

40N, Right unbalanced

Answer

0N balanced

Question 55

8 N to the left , and 4 N to the right. Find the net force. Is this balanced?

Accepted Answer

4 N Left  No

Answer

12 N Right  No

Answer

12 N Right  Yes

Answer

4 N Left  Yes

Question 56

In which of these cases is the car is balanced?

Accepted Answer

A car with the cruise control set at 80 km/h making no turns

Answer

A car turning into the Target parking lot

Answer

A car approaching a red light

Answer

A car moving down a ramp

Question 57

Which image demonstrates a balanced force

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 58

These forces are...

Accepted Answer

Unbalanced

Answer

Balanced

Question 59

These forces are...

Accepted Answer

Balanced

Answer

Unbalanced

Question 60

The net force is...

Accepted Answer

0 N

Answer

50 N

Answer

100 N

Answer

2500 N

Question 61

The net force is...

Accepted Answer

100 N

Answer

50 N

Answer

0 N

Answer

2500 N

Question 62

The net force is...

Accepted Answer

20 N

Answer

-20 N

Answer

0 N

Answer

80 N

Question 63

Which runner stopped for a rest?

Accepted Answer

Charlie

Answer

Albert

Answer

Bob

Question 64

Which runner won the race?

Accepted Answer

Albert

Answer

Bob

Answer

Charlie

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