1 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
3 David is studying orbital motion. He knows that satellites orbit Earth due to gravity. What is the direction of the gravitational force on a satellite? A Towards the center of Earth B Away from the center of Earth C Tangential to the orbit D In the direction of motion
4 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
5 Fatima is studying planetary data. She knows that the orbital period of a planet increases with its distance from the Sun. Which planet has a longer orbital period: Mars or Earth? A Mars B Earth C Both have the same period D Cannot be determined
6 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
7 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
8 Lara is analyzing the forces acting on a book placed on a table. The book is at rest. What is the net force acting on the book? A Zero B Equal to the weight of the book C Equal to the normal force D Equal to the frictional force
10 Uma is studying the principle of moments. She knows that the principle of moments states that for a body in equilibrium, the sum of clockwise moments equals the sum of anticlockwise moments. What is the principle of moments? A Sum of clockwise moments = Sum of anticlockwise moments B Sum of all forces = Sum of all torques C Moment = Force × Distance D Moment = Mass × Acceleration
11 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
12 Julia is studying the stability of objects. She knows that a cone standing on its base has stable equilibrium. What type of equilibrium does a cone standing on its tip have? A Stable equilibrium B Unstable equilibrium C Neutral equilibrium D Dynamic equilibrium
13 Bilal is studying the moment of a force. He knows that the moment of a force depends on the magnitude of the force and the perpendicular distance from the pivot. What is the formula for the moment of a force? A Moment = Force × Distance B Moment = Force / Distance C Moment = Mass × Acceleration D Moment = Work / Time
14 David is balancing a seesaw with two friends of different weights. He moves the heavier friend closer to the pivot to balance it. What principle is he applying? A Principle of moments B Newton's second law C Law of conservation of energy D Principle of conservation of momentum
16 If all forces acting on a body cancel each other, the resultant force is: A Maximum B Minimum C Zero D Infinite
17 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
18 Hina is walking on a slippery floor. She finds it difficult to walk without slipping. What type of friction is helping her walk? A Rolling friction B Static friction C Fluid friction D Kinetic friction
19 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
20 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
21 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
23 Quinn is studying the center of mass of a body. He knows that the center of mass is the point where the entire weight of the body can be considered to act. For a uniform rod, where is the center of mass located? A At one end B At the midpoint C At the quarter point D Outside the rod
24 George is trying to slide a heavy box across the floor. He finds it difficult to start moving the box, but once it moves, it requires less force. What concept explains this observation? A Static friction is greater than kinetic friction B Kinetic friction is greater than static friction C Friction is independent of motion D There is no friction once the box moves
25 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
26 Ibrahim is studying the center of mass. He knows that the center of mass of a body is the point where the body can be balanced perfectly. For a uniform sphere, where is the center of mass located? A At the center of the sphere B At the surface of the sphere C Outside the sphere D At any point
27 Emma is studying the average orbital speed of satellites. She knows that the orbital speed depends on the distance from Earth. Which satellite has a higher orbital speed: one in low Earth orbit or one in geostationary orbit? A Low Earth orbit satellite B Geostationary satellite C Both have the same speed D Cannot be determined
28 Oliver is studying fluid friction. He knows that fluid friction is the resistance offered by fluids. Which of the following is an example of fluid friction? A Friction between two solid surfaces B Air resistance on a moving car C Friction between the tires and the road D Friction between the brake pads and the wheel
29 Nora is studying the disadvantages of friction. She knows that friction causes energy loss in machines. What is a method to reduce friction? A Using lubricants B Increasing the roughness of surfaces C Increasing the weight of the object D Removing all lubrication
30 Rachel is analyzing the stability of a tall building. She knows that a building is more stable if its center of mass is lower. What type of equilibrium does a building with a low center of mass have? A Unstable equilibrium B Neutral equilibrium C Stable equilibrium D Dynamic equilibrium