 ## Summative Practice (Question 8 & 9) – Form 4 Science (KSSM) Chapter 11

Question 8:Figure 7 shows a ticker tape chart of a trolley moving down an inclined runway. The ticker timer being used vibrates at a frequency of 50 Hz.(a) Determine the time for 10 ticks.(b) What is the velocity for ticker tape 1 and ticker tape 5?(c) The runway is inclined further so that the trolley … Read more

## Summative Practice (Question 6 & 7) – Form 4 Science (KSSM) Chapter 11

Question 6:Figure 5 shows two wooden blocks, P and Q which are of different sizes but have the same mass.(a) Give the meaning of inertia.(b) Which wooden block has a larger inertia? Explain your answer.(c) State Newton’s First Law of Motion. Answer:(a) Inertia is the natural tendency of an object to resist any change in … Read more

## Summative Practice (Question 3 – 5) – Form 4 Science (KSSM) Chapter 11

Question 3:Figure 2 is a graph that shows the motion of a car.Based on the graph above,(a) what represents acceleration?(b) what is the acceleration of the car from 0 to 5 seconds?(c) determine the total displacement of the car. Answer:(a) Gradient of graph(b) 20 m s–1 ÷ 5 s = 4 m s–2(c) ½ × … Read more

## Summative Practice (Question 1 & 2) – Form 4 Science (KSSM) Chapter 11

Question 1:Azmeer rides his motorcycle to the north for 24 km, then to the west for 12 km and finally to the south for 12 km before he stops to rest (Figure 1). His journey takes 2 hours.(a) What is the distance travelled by Azmeer?(b) What is Azmeer’s displacement?(c) Determine Azmeer’s average speed.(d) Calculate the … Read more

## Formative Practice 11.2 – Form 4 Science (KSSM) Chapter 11

Question 1:What is represented by the gradient of the graph in the displacement-time graph? Answer:Velocity Question 2:What is represented by the area under the graph in the velocity-time graph? Answer:Displacement Question 3:A toy car moves down a smooth runway and then moves over a rough flat surface until it stops. Sketch the velocity-time graph which … Read more

## Formative Practice 11.4 – Form 4 Science (KSSM) Chapter 11

Question 1:Give the meaning of inertia and provide two examples of inertia in our daily life. Answer:Inertia is the natural tendency of an object to resist any change in its original state, whether being at rest or in motion.Examples of inertia:• Dry an umbrella by spinning it fast and stopping it suddenly.• The driver is … Read more

## Formative Practice 11.3 – Form 4 Science (KSSM) Chapter 11

Question 1:Fill in the blanks with the correct answer.(a) Free fall is the motion of an object due to ________ force only.(b) The non-free fall motion of an object is affected by _________ resistance.(c) __________ is the acceleration due to gravitational force acting on an object towards the centre of Earth. Answer:(a) gravitational(b) air(c) Gravitational … Read more

## Formative Practice 11.1 – Form 4 Science (KSSM) Chapter 11

Question 1:State the meaning of the following terms:(a) Distance (b) Displacement (c) Velocity (d) Acceleration Answer:(a) Distance: Total length of path travelled by an object(b) Displacement: Distance of the shortest path that connects two locations in a certain direction.(c) Velocity: Rate of change of displacement(d) Acceleration: Rate of change of velocity Question 2:The figure shows … Read more