Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science > Speed > Flashcards

Speed Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Write down the equation used to calculate the speed of an object.

A

Speed = distance / time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How is the speed equation rearranged to find the distance travelled by an object?

A

Distance = speed x time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How is the speed equation rearranged to find the time taken for an object to travel a given distance?

A

Time = distance / speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A car travels 20 metres in 5 seconds. Calculate the speed of the car.

A

4 m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A bike is travelling at 2m/s for 7 seconds. How far does it go?

A

14 m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A walker travels 30 metres in 1 minute. What is her average speed?

A

0.5 m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Two cars are travelling towards each other at 20m/s. What is their speed relative to each other?

A

40m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A bus is travelling at 15m/s and a car is travelling at 25m/s in the same direction. What is the speed of the car relative to the bus?

A

10m/s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does a distance-time graph show?

A

The distance travelled by an object over time.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does a straight line on a distance-time graph represent?

A

A constant speed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does a horizontal (flat) line on a distance-time graph represent?

A

A stationary object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How would you show an object that is speeding up on a distance-time graph?

A

A steepening curve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does the slope of the line on a distance-time graph represent?

A

The speed of the object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The steeper the line on a distance-time graph, the ________ the object is moving.

A

Faster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How would you show an object that is speeding up on a distance-time graph?

A

A curve that is levelling off.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

True or false: Air resistance and water resistance are non-contact forces.

A

False.

17
Q

Air resistance and water resistance are both types of _________.

A

Drag

18
Q

Give two factors that can increase the drag acting on an object.

A

The speed of the object and the surface area of the object.

19
Q

Explain explain why the drag force on an object increases with the object’s speed.

A

The object collides with the air particles more frequently and with more force.

20
Q

Describe how the drag force on an object can be reduced.

A

Streamlining reduces the drag force. The air flows smoothly around the object, reducing drag.

Science (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions