modul 3 form 5

ESTETIKA SDN BHD TEACHERS COPY

MODUL 3 FORM 5 – Chapter 2 (Force & Motion)1. To test the knowledge of physics in Chapter 2 by using completing the sentences belowWhat is meant by Statement1. Linear motion Motion along a ……………………….

2. Scalar quantity A physical quantity which has only ………………….

3. Vector quantity A physical quantity which has both …………..and ………………….

4. Velocity The rate of change of ………………….

5. Speed The rate of change of ………………….

6. Acceleration The rate of change of …………………..

7. Distance The total …………….. of the path travelled

8. Displacement Displacement is the ………….. distance from one point to another point along a specific ……………….

9. Inertia The tendency of an object to …………..changes to its state of motion whether the object is at …………… or …………………...with constant velocity

10. Newton’s First law An object will ………… at rest or motion with …………. velocity along a straight line unless it is acted upon by an external force.

11. Newton’s Second law The …………………….. of an object is directly proportional to the ……… ………. acting on the object and inversely proportional to the……………. of the object

12. Newton’s Third law To every ……………. there is an equal and opposite …………….. .

13. Momentum The product of ………… and …………….. of an object

14. Principle of

conservation of momentum

The total momentum of a system before and after the collision is ………………. if no external forces acted on the system.

15. Force A push or a pull that can change the ………, ………… or ……………. of an object.

16. Impulse Change of ……………………..

17. Impulsive force Rate of change of ……………………………..

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18. Weight Gravitational ……….. acting on an …………….

19. Mass The measurement of …………….. in the object.

20. Free fall Free fall occurs when an object falling under the …………. of ……………… only without being affected by any other ………………….forces and accelerates with a …………………. acceleration regardless their …………………………

21. Work The product of …………… and the …………………… along the direction of the ………………..that cause the displacement

22. Energy The ………………… to do work.

23. Gravitational field The region in which an object experiences a ……… due to ………………………attraction.

24. Gravitational potential

energy

The energy …………. in the object because of its …………..

25. Elastic potential energy The energy of an object when it is ……………….or ……………….

26. Kinetic energy The energy of an object due to its ……………………

27. The principle of conservation of energy

Energy cannot be …………….or ………………. . It can be transformed from one form to another, but the total energy in a closed system is constant.

28. Power The rate at which ……………… is done or energy is transferred.

29. Elasticity The property of an object that enables it to return to its ………………… …………….. and dimensions (size) after an applied external force is removed.

30. Hooke’s law The extension of a spring is directly proportional to the …………………. provided the elastic limit is not exceeded.

31. Elastic limit The elastic limit of a spring is the ………………… force which can be applied to the spring before it loses its elasticity.

32. Force constant

(spring constant)

The force constant of a spring is the ………….. per unit ………………………. or ………………………. distance

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Length / cm1612

84

0

A B C Time/s


2 A car traveling with a velocity of 10 m s-1 accelerates uniformly at a rate of 3 m s-2 for 20 s. Calculate the displacement of the car while it is accelerating.

3 A van that is traveling with velocity 16 m s-1 decelerates until it comes to rest. If the distance traveled is 8 m, calculate the deceleration of the van.

4. Figure 2.1 shows a tape chart consisting of 5-tick strip. Describethe motion represented by AB and BC.In each case, determine the ;(a) displacement

(b) average velocity Figure 2.1

(c) acceleration

Figure 2.1

5. Diagram 1 shows a ticker tape produced when a trolley move along an inclined runway.

Diagram 1(a) Complete the sentence below by ticking (√) the correct box. The type of current used for ticker timer

alternating current. direct current.

(b) On Diagram 1 mark ‘X’ to show one tick . (c) Based on Diagram 1 determines the velocity of the trolley?

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ANSWERS1.What is meant by Statement1. Linear motion Motion along a straight line

2. Scalar quantity A physical quantity which has only magnitude

3. Vector quantity A physical quantity which has both magnitude and direction

4. Velocity The rate of change of displacement

5. Speed The rate of change of distance

6. Acceleration The rate of change of velocity

7. Distance The total length of the path travelled

8. Displacement Displacement is the total distance from one point to another point along a specific direction

9. Inertia The tendency of an object to resist changes to its state of motion whether the object is at rest or moving with constant velocity

10. Newton’s First law An object will remain at rest or motion with constant velocity along a straight line unless it is acted upon by an external force.

11. Newton’s Second law The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the mass of the object

12. Newton’s Third law To every action there is an equal and opposite reaction.

13. Momentum The product of mass and velocity of an object

14. Principle of

conservation of momentum

The total momentum of a system before and after the collision is equal if no external forces acted on the system.

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15. Force A push or a pull that can change the size, shape or direction of an object.

16. Impulse Change of momentum

17. Impulsive force Rate of change of momentum

18. Weight Gravitational force acting on an object

19. Mass The measurement of matter in the object.

20. Free fall Free fall occurs when an object falling under the effect of gravity only without being affected by any other external forces and accelerates with a constant acceleration regardless their mass

21. Work The product of force and the displacement along the direction of the force that cause the displacement

22. Energy The ability to do work.

23. Gravitational field The region in which an object experiences a force due to gravitational attraction.

24. Gravitational potential

energy

The energy stored in the object because of its position

25. Elastic potential energy The energy of an object when it is compressed or extended

26. Kinetic energy The energy of an object due to its motion

27. The principle of conservation of energy

Energy cannot be created or destroyed. It can be transformed from one form to another, but the total energy in a closed system is constant.

28. Power The rate at which work is done or energy is transferred.

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29. Elasticity The property of an object that enables it to return to its original shape and dimensions (size) after an applied external force is removed.

30. Hooke’s law The extension of a spring is directly proportional to the force provided the elastic limit is not exceeded.

31. Elastic limit The elastic limit of a spring is the maximum force which can be applied to the spring before it loses its elasticity.

32. Force constant

(spring constant)

The force constant of a spring is the force per unit compression or extension distance.

2. s = ut + ½ at2 s = (10)(20) + ½ (3)(20)2 s = 800 m

3. v2 = u2 + 2 as 02 = 162 + 2 a(8) a = -16 ms-2

4. (a) s = 4 + 8 + 12 + 16 + 16 + 16 = 72.0 cm

(b) vaverage =

72 .06(0 .1) = 120.0 cm s-1

(c) v =

16 .00 .1 = 1.6 cm s-1

a =

v−ut =

1.6−0 .40.5 u =

4 .00 .1 = 0.4 cm s-1

= 2.4 cm s-2 t = 5 (0.1) = 0.5 s

5. (a) alternating current (b) X is anywhere between 2 consecutive dots (c) 50 cm s-1

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modul 3 form 5

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