Skip to content 1 Why does a canoe move forward when the canoeist pushes water backwards with their paddle and why does it move faster when they push harder?
SA (Short)
2 Suppose the same canoeist uses the same paddle force in two different canoes, one empty and one carrying another passenger.
SA (Short)
3 A weightlifter lifts a barbell.
SA (Short)
4 An object is moving with a constant velocity.
VS (Very Small)
5 Two players R and S are participating in an arm-wrestling match.
SA (Short)
6 What if the force of friction disappears in the world?
SA (Short)
7 In the real world, it is difficult to find a situation where no forces are acting on an object.
SA (Short)
8 Suppose, no net force is acting on an object.
SA (Short)
9 A toy car of mass 100 g is moving with a constant velocity of 0.5 m s⁻¹. What is the net force acting on the toy car? [Pg. No. 106]
VS (Very Small)
10 Two children of different masses are sitting on identical swings.
SA (Short)
11 How are glass items packed for transportation using a bubble wrap or hay protected from damage?
SA (Short)
12 Suppose a spacecraft is moving in a region of space where the gravitational force acting upon it is negligible.
SA (Short)
13 For a ball moving on a smooth frictionless surface, choose the appropriate option that will make the following statements physically correct.
SA (Short)
14 Using a horizontal force F, a table is moved across the floor at a constant velocity.
VS (Very Small)
15 Why does a fireperson sometimes struggle when holding the pipe issuing water?
SA (Short)
16 While practising for the snake boat race (Vallum kalli in Keral
SA (Short)
17 The position-time graph for four objects A, B, C and D moving along a straight line are shown in the given figure.
MCQ (Multiple Choice)
18 When a net force acts on an object, we observe that the object accelerates:
MCQ (Multiple Choice)
19 A sailor jumps out from a small boat to the shore as shown in the given figure.
SA (Short)
20 Two blocks 'P' and 'Q' on a smooth horizontal surface are shown in the given figures, (X) and (Y).
MCQ (Multiple Choice)
21 A hand cart loaded with vegetables collides with an identical but empty hand cart.
MCQ (Multiple Choice)
22 The acceleration-mass graph for the acceleration produced by a force on objects of different masses is plotted in the given figure.
SA (Short)
23 During a high jump event, a landing mat or sand bed is placed for the athlete to fall upon as shown in the given figure.
SA (Short)
24 The velocity-time graph of an object of mass 10 kg moving along a straight line is shown in the given figure.
SA (Short)
25 A bullet of mass 50 g moving with a speed of 100 m s⁻¹ enters a heavy stationary wooden block and stops after penetrating a distance of 50 cm.
SA (Short)
26 A tractor pulls a harrow (a ploughing tool) of mass m₁ with a net force F resulting in an acceleration of a₁.
LA (Long)
27 An ace footballer converted a penalty shot by kicking the football with a speed of 108 km h⁻¹.
SA (Short)
28 An object of mass 2 kg moving with a constant velocity of 10 m s⁻¹ encounters a rough patch where the force of friction on the object is 7 N.
LA (Long)
29 When the pole of a bar magnet is brought close to a magnetic compass, the bar magnet and the compass needle (which is also a magnet) exert a magnetic force on each other.
SA (Short)