Social networks

OpenProf

Unlock access to content

Select one option:

Free of charge

Unlock the chapter "Average Speed"

Unlock access to the solution of problems in this chapter.
Free of charge Price: 3.00 £

Continue »

Subscribe to OpenProf If you do not get a better grade, you get your money back!

Unlock access to all problems solutions.
Available from 8.25 £ / month.

Continue »

physics Physics For High Schools (KS4)

Solved problems for the chapter:

Average Speed

View the theory »

Motion

1. Point body

2. Speed

3. Forum

View the theory »

Uniform Motion for A-Level

1. Linear uniform motion

2. Equations and graphs of linear motion

2.1. Object moving away from the starting point

2.2. Object approaching the starting point

2.3. Time delay of motion

3. Sectional uniform motion

4. Composite motion

5. Forum

↓ Show theory [2] ↓

Detailed solution steps are available at:

https://en.openprof.com/wb/chapter:average_speed/3471/

Example 1.

A car travels along the route PQRST in 45 minutes.

What is the average speed of the car?

Example 2.

A snail moves along a ruler as shown below.

It takes the snail to move from point Q to R. What is the average speed of the snail from Q to R?

In a race, a car travels 60 times around a track in . What is the average speed of the car?

A car travels a distance of . The journey takes 2 hours. The highest speed of the car is and the lowest is . What is the average speed for the journey?

A tunnel has a length of . A car takes to travel between the two ends of the tunnel. What is the average speed of the car?

The table below shows the distance covered by four vehicles travelling at different times:

Vehicle	Time,	Distance,
A	40 s	400 m
B	2 min	960 m
C	1 hr	50 km
D	20 min	14 km

Which vehicle has the highest average speed?

A runner runs the first of his race at a speed of , then the next at a speed of and the last at a speed of . Calculate the average speed of the runner in m/s and round it to the nearest whole number.

A driver drives from Manchester to London in 3h 30 min. If the distance between Manchester and London is 336 km, what is the driver's average speed in km/h?

A car travels at various speeds during a short journey. The table below shows the distances travelled and the times taken during each of four stages P, Q, R, and S.

Stage	P	Q	R	S
Distance travelled ()	1.8	3.6	2.7	2.7
Time taken ()	2	2	4	3

During which two stages is the car travelling at the same average speed?

P and S
P and Q
Q and R
R and S

10.

The driver of a car drives on the highway for 45 minutes at a speed of 120 km/h, and then another 15 minutes on the settlement at a speed of 60 km/h. What is the driver's average speed?

11.

Runners ran a marathon. The length of the route was 42.195 km. The fastest marathoner ran the course in 2 h 3 min and 23 s and set a record. What was his average speed? Express the result in meters per second.

12.

A car on the highway accelerates from 72 km/h to 108 km/h.

How much has its speed changed?
What is its average speed?
Give the results in km/h and m/s.

13.

A car travels along a main road in , It then travels along a minor road in . Which of the following expressions represents the average speed of the car for the whole journey?

Total journey of the car

14.

Indicate which of the motions below is linear and uniform?

The motion of the driver of a car who drives uniformly at 120 km/h on a straight section of the motorway.
The motion of a motorcyclist riding uniformly in a bend.
The motion of a Formula 1 racer who accelerates on a flat section of the racetrack.
The motion of a snowflake falling from the sky at a speed of 4 m/s.
The motion of a skier who rides a slalom between the gates.

15.

Is the motion uniform or non-uniform?

Driving a truck on a flat part of the highway at a constant speed.
Even movement of a hockey ball on the ice.
Start skiing downhill.
Carousel ride at the stop.
Steppings on military parades.
Free fall of a jumper when he jumps out of a plane.

16.

When cycling with a time-measuring device (chronometer), a cyclist travels a distance of 40 km in 46 minutes. At the checkpoint, his speed is measured as 60 km/h.

Is his motion unifrom?
Calculate his average speed.

17.

Object P moves at a constant speed of repeatedly backwards and forward in a straight

line.

Object Q moves at a constant speed of vertically downwards.

Object R moves at a constant speed of in a circular motion.

Which objects are moving with uniform velocity?

18.

A car takes 15 minutes to travel along a road that is 20 km long. What is the average speed of the car?

19.

A trolley travels a distance of down a slope in a time of . Calculate the average speed of the trolley.

20.

A ball moves down a slope as shown below. The time it takes to move from X to Y is measured. What other quantity has to be measured to calculate the average speed of the ball from X to Y?

21.

The diagrams below show distance–time graphs for two objects. Which graph represents an object moving at a uniform speed?

Title

22.

An athlete runs up a hill at a steady speed of . She then immediately runs the same distance down the hill at a steady speed of . What is her average speed for the total run?

23.

A train is traveling along a straight railway track. The train maintains a speed of , without any changes in its velocity. Determine if the train is moving with a uniform speed.

24.

A trolley is moving down the a slope.The trolley has a piece of paper tape attached to it. The tape passes through a machine which makes a dot on the tape every . State how the dots on the tape show that the trolley was moving with constant speed. The figure below shows a section of the tape.

Section of paper tape