1 Ibrahim is learning about mass and weight. He understands that mass is the amount of matter in an object, while weight is the force of gravity on that object. On Earth, what is the weight of a 50 kg object? (Take g = 10 m/s²) A 50 N B 500 N C 5 N D 5000 N
2 The vertical or perpendicular component of a force F making an angle θ with the horizontal x-axis is given by: A F cos(θ) B F tan(θ) C F sin(θ) D F cot(θ)
3 Emma is studying the stability of a cone. She places it on its base and it stands firmly. She then places it on its tip and it falls over. What type of equilibrium does the cone have when standing on its tip? A Stable equilibrium B Unstable equilibrium C Neutral equilibrium D Dynamic equilibrium
5 Omar is studying Newton's laws. He learns that Newton's first law describes what happens when no force acts on an object. What is the state of motion of an object with zero net force? A It must be at rest B It must be moving with constant velocity C It could be at rest or moving with constant velocity D It must be accelerating
6 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
7 Free body diagram represents: A Motion of body B All forces acting on a body C Shape of body D Velocity of body
8 Effect of force on velocity can be: A Change in speed B Change in direction C Change in both D No change
9 George is learning about Newton's second law of motion. He understands that force equals mass times acceleration (F = ma). If a 10 kg object is accelerated at 2 m/s², what is the force acting on it? A 5 N B 20 N C 12 N D 10 N
13 Fatima is analyzing the stability of a ball resting on a flat floor. If she pushes it slightly, it rolls and comes to a stop at a new position. What type of equilibrium does the ball have? A Stable equilibrium B Unstable equilibrium C Neutral equilibrium D Static equilibrium
14 Force that acts only when bodies are in contact is called: A Gravitational force B Magnetic force C Contact force D Electric force
15 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
16 Tina is studying mass and weight. She learns that weight varies with location while mass remains constant. What is the weight of a 60 kg astronaut on the Moon where g = 1.6 m/s²? A 60 N B 600 N C 96 N D 160 N
17 Vera is learning about types of forces. She understands that tension is a force transmitted through a string. What is the direction of tension in a string? A Always outward B Always inward C Always along the string D Always opposite to the string
20 A body is in equilibrium when its: A acceleration is zero. B speed is zero. C velocity is non-uniform. D displacement is zero.
21 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
22 Carlos is learning about force and change in momentum. He understands that a force changes the momentum of an object. If a force of 4 N acts on an object for 5 seconds, what is the change in momentum? A 20 Ns B 10 Ns C 25 Ns D 15 Ns
23 Waseem is studying the stability of objects. He knows that a cone lying on its side is in neutral equilibrium. What happens if it is displaced? A It returns to its original position B It moves further away C It remains in the new position D It falls
24 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
25 Why are airbags used in cars? A To increase speed B To decrease force by increasing time C To reduce mass D To stop motion instantly