NAME : ________________________________________
CLASS : _____________
25
TOPICAL ASSESSMENT
CH 9 : SPEED AND ACCELERATION
1.
Circle the following situations either represents uniform speed or non-uniform speed.
a) Movements of a lorry stopping at the traffic light
b)
Distance (km)
Time
50
100
150
9.00 am
9.10 am
9.20 am
c) Johan drives a car from town P to town Q of distance 45
km in 30 minutes. While from town Q to town S of
distance 30 km in 20 minutes
Uniform
Speed
Non-uniform
Speed
Uniform
Speed
Non-uniform
Speed
Uniform
Speed
Non-uniform
Speed
[3 marks]
2. Calculate the speed in each of the following situations
a) A fan makes 2160 rotations in 30 minutes
b) A lift moves up 60m in 1.5 minutes
Answer :
Answer :
a)
b)
[2 marks]
3. Salina cycled at 13 ms-1 for 845 m and at 16 ms-1 for 560 m. calculate the average speed in m/s.
[3 marks]
Answer :
4.
The distance between Town A and Town B is 234km. A bus left Town A at 10.30am and arrived
at Town Q at 1.45pm. Calculate the speed in km/h of the bus.
[2 marks]
Answer :
FORM 2 KSSM MATHEMATICS
1
5. Diagram shows the positions of three places, P, Q and R.
65 km
Q
P
R
Hamizan leaves P at 0830 hours to Q. After 20 minutes break at Q, he continues his journey
to R. He reaches R at 1015 hours on the same day. The average speed for the whole journey is
80 km/h.
a) Calculate the distance, in km, between Q and R.
[2 marks]
b) The travelling time from Q to R is 5 minutes longer than P to Q. Calculate the average
speed, in km/h, from P to Q.
[2 marks]
Answer :
6. An airbus take off velocity is at 280 km/h. it has to accelerate at 2.0 m/s2. How long does take
off last?
[3 marks]
Answer :
7. A car is moving at 90 km/h slows down its speed to 85% of its original speed within 5
seconds. Calculate its acceleration in km/h per second.
[2 marks]
Answer :
FORM 2 KSSM MATHEMATICS
2
8. The distance between cities P and Q is 210 km. car A leaves P to Q while B leaves Q to P at
the same time and using the same route. Cars A and B meet after 1.2 hours after travelling.
Given both cars travel at constant speeds where car A moves 10km/h faster than car B.
Calculate the speed, in km/h, of car A.
[3 marks]
Answer :
9. Diagram show two racing cars, P and Q.
Racing cars, P and Q move at the same speed, which 315 km/h. at the final lap of the race, car
P increases its speed to 355 km/h in 5 seconds, while the speed of car Q increases 1/5 more
than its earlier speed in 4 seconds.
Calculate the difference in acceleration between car P and car Q, in km/h per second.
[3 marks]
Answer :
FORM 2 KSSM MATHEMATICS
3