1 Tina is studying planetary data. She knows that the orbital speed of a planet depends on its distance from the Sun. Which planet has a higher orbital speed: Venus or Saturn? A Venus B Saturn C Both have the same speed D Cannot be determined
3 Chloe is studying the equilibrium of a book lying on a table. She knows that the forces acting on the book are balanced. What is the condition for a body to be in equilibrium? A Sum of all forces is zero B Sum of all torques is zero C Both A and B D The body must be at rest
4 Patricia is studying frictional dissipation. She knows that friction converts mechanical energy into heat. What is the term for this energy conversion? A Frictional dissipation B Energy conservation C Energy transfer D Energy transformation
5 Sam is studying the average orbital speed of satellites. She knows that the orbital speed is given by the formula v = 2πr/T. What does T represent in the formula? A Orbital period B Radius of orbit C Speed of light D Gravitational constant
6 Uma is studying the conditions of equilibrium. She knows that for a body to be in equilibrium, the sum of all forces and the sum of all torques must be zero. What is the second condition of equilibrium? A Sum of all forces is zero B Sum of all torques is zero C Both A and B D The body must be at rest
8 Victor is studying the principle of moments. He uses a seesaw and balances two children of different weights. What must be equal for the seesaw to be balanced? A The clockwise and anticlockwise moments B The forces applied C The distances from the pivot D The weights of the children
9 Lara is studying the advantages of friction. She knows that friction is useful in many situations. Which of the following is an advantage of friction? A It causes wear and tear B It allows us to grip objects C It produces heat D It reduces energy efficiency
10 Why does a gun recoil when a bullet is fired? A Due to gravity B Due to friction C Due to Newton’s Third Law D Due to inertia
11 Hina is studying the principle of moments. She uses a meter rule to balance weights on both sides. What is the principle that she is applying? A Principle of moments B Law of conservation of energy C Newton's second law D Law of conservation of momentum
13 Principle of conservation of momentum states that: A Momentum always increases B Momentum is lost in collisions C Total momentum remains constant D Momentum depends on force
14 Khalid is studying friction. He knows that friction is a force that opposes motion. Which type of friction is the largest? A Static friction B Kinetic friction C Rolling friction D Fluid friction
15 Zara is studying the methods of reducing friction. She knows that friction can be reduced in various ways. Which method is used to reduce friction between moving parts of machines? A Increasing the roughness of surfaces B Using lubricating oils C Increasing the weight of the object D Using sandpaper
16 A couple is formed by: A two forces perpendicular to each other. B two equal and opposite forces not in the same line. C two equal and opposite forces in the same line. D two unequal forces.
17 Which of the following is an example of action-reaction pair? A Weight and mass B Push on wall and wall pushing back C Friction and gravity D Speed and velocity
18 Tina is studying the second condition of equilibrium. She knows that for a body to be in equilibrium, the sum of all torques acting on the body must be zero. What is the second condition of equilibrium? A Sum of all forces is zero B Sum of all torques is zero C Both A and B D The body must be at rest
19 The centre of gravity of an irregularly shaped thin lamina can be found using a: A Plumb line B Screw gauge C Vernier callipers D Metre rule
20 Victor is studying the types of equilibrium. He knows that a ball at the bottom of a bowl is in stable equilibrium. What happens if the ball is displaced slightly? A It moves further away B It returns to its original position C It remains in the new position D It accelerates
21 A body is in equilibrium when its: A acceleration is zero. B speed is zero. C velocity is non-uniform. D displacement is zero.
22 Newton’s Third Law of Motion states that: A Force equals mass times acceleration B Every action has an equal and opposite reaction C Body remains at rest or in motion D Momentum is conserved
23 Ahmed is trying to open a heavy door by pushing near the hinges. He finds it very difficult. He then pushes at the far end of the door and finds it easier. What concept explains why pushing at the far end is more effective? A Center of mass B Moment of a force C Friction D Equilibrium
24 Rachel is studying orbital motion. She knows that the Moon orbits Earth due to gravity. What is the centripetal force for the Moon's orbit? A Gravitational force from Earth B Centrifugal force C Frictional force D Electromagnetic force
25 Patricia is studying fluid friction. She knows that fluid friction is the resistance offered by fluids. What is another term for fluid friction? A Static friction B Viscous drag C Kinetic friction D Rolling friction