Revision Distance, Speed and Time

Question 1:

The graph shows the journey of a train from Punggol Station to Orchard Station.

a) How long did the train service break down?

b) How far is the train from Orchard Station after 5 minutes?

c) How much time would the train need to reach Orchard Station if it has not broken

down?

d) A bus is also traveling from Punggol Station to Orchard Station. It left Punggol

station at 0910 and traveled at a constant speed of 40 km/h. Show the journey of

the bus on the above graph.

Revision Distance, Speed and Time

Question 2:

The diagram shows the distance-time graph for Alvin’s journey and Ben’s journey from

X to Y along a walking track.

a) What is the distance between X and Y?

b) Estimate the distance between Alvin and Ben when t = 15.

c) Find Alvin’s speed when t = 12.

d) Find Alvin’s speed when t = 25.

Revision Distance, Speed and Time

Question 3:

The diagram shows the speed-time graph of a moving object.

a) Find the acceleration of the object when t = 3.

b) Given that the object decelerated at 2 m/s2. Find the value of T.

c) Calculate the average speed for the whole journey.

Revision Distance, Speed and Time

Question 4:

A particle travels at a constant speed of 30 m/s for 10 seconds and was then brought to

rest with a uniform acceleration after a further 10 seconds.

a) On the axes provided below,

sketch the speed-time graph

of the particle for the first

20 seconds.

b) Calculate the acceleration in the last 10 seconds.

c) Calculate the speed of the particle when t = 13.7 s.

d) On the axes provided below, sketch the distance-time graph of the same journey.

Revision Distance, Speed and Time

Question 5:

The diagram shows the speed-time graph of a car. The car starts from rest and attain a

speed of 40 m/s in 14 seconds. It then moves with constant speed for 20 seconds and

then slows down at a steady rate to stop at T seconds. The total distance travelled by the

car is 1480 m.

a) Find the value of T.

b) Find the deceleration of the car.

c) Find the distance travelled by the car in the first 20 seconds.

d) Draw a distance-time graph for the same journey.

Revision Distance, Speed and Time

Question 6:

The diagram below shows the speed-time graph of a car, which starts from rest.

a) Calculate the speed of the car after 9 seconds.

b) Find the value of u, if the total distance covered in the first 40 seconds is 900 m.

Revision Distance, Speed and Time

Question 7:

The diagram below shows a velocity-time graph

of a moving object over a period of t seconds.

a) Calculate

(i) the retardation during the first 2 seconds,

(ii) the value of t if the total distance moved for the t seconds is 36 m.

b) On the axes in the answer space, sketch the distance-time graph of the object over

the period of the t seconds.

Revision Distance, Speed and Time

Question 8:

The diagram below shows the speed-time graph of a car which starts from rest.

a) Calculate the speed of the car at t = 9 s.

b) Find the value of v, if the total distance covered in the first 40 seconds is 900 m.

c) Find the retardation at t = 50 s

d) Use the diagram provided below to draw the distance-time graph of the car for the

whole journey.

Revision Distance, Speed and Time

Question 9:

The speed, v m/s, of a car at time t seconds is given by v = 2t + 3 for .

For , the speed of the car decreases uniformly until it finally comes to rest.

The speed time graph is given below.

(a) Find the maximum speed of the car in km/h.

(b) Calculate the speed of the car during the 8th second.

70 t

157 t

Revision Distance, Speed and Time

Question 10:

The diagram is the speed-time graph of an object during a period of 16 seconds.

a) Calculate the speed of the object when t = 4.

b) Find the distance of the whole journey.

Revision Distance, Speed and Time

Question 11:

The diagram is the speed-time graph of a van's journey for a period of 60 seconds.

a) If the van accelerates at 0.88 m/s2 at t = 20, find the value of v.

b) Calculate the average speed of the van.

c) In the axes given in the answer space, sketch the distance-time graph of the van for

the entire journey.

Speed (m/s)

Time, t (s) 15 40 60

20

v

Revision Distance, Speed and Time

Revision Accomplished!