1 Which type of friction is usually the smallest? A Static friction B Kinetic friction C Rolling friction D Sliding friction
2 Impulse is equal to: A Change in momentum B Rate of change of momentum C Product of mass and acceleration D Product of force and distance
3 The force that opposes the motion of an object is called: A Normal force B Tension C Friction D Weight
4 What is the momentum of an object with mass 4 kg moving at 3 m/s? A 12 kg·m/s B 7 kg·m/s C 1.33 kg·m/s D 0.75 kg·m/s
5 In an airbag, the purpose of increasing the time of impact is to: A Increase the impulse B Decrease the change in momentum C Reduce the force experienced by the passenger D Increase the change in momentum
6 According to Newton's second law of motion, F = ma, if mass is constant, acceleration is: A Directly proportional to force B Inversely proportional to force C Independent of force D Equal to force
7 Which law of motion is also known as the law of inertia? A Newton's first law B Newton's second law C Newton's third law D Law of gravitation
8 Which of Newton's laws is also known as the law of inertia? A First law B Second law C Third law D Law of gravitation
9 Newton's third law of motion states that: A Every action has an equal and opposite reaction B Force equals mass times acceleration C An object at rest stays at rest D Momentum is always conserved
10 In an isolated system, the total momentum before and after a collision is: A Increased B Decreased C Conserved D Zero
11 When a gun is fired, the recoil of the gun is an example of: A Newton's first law B Newton's second law C Newton's third law D Law of gravitation
12 Which of the following is a mechanical balance? A Digital bathroom scale B Beam balance C Electronic kitchen scale D Digital weighing machine
13 The impulse-momentum theorem states that impulse is equal to: A Change in momentum B Rate of change of momentum C Product of mass and acceleration D Work done on the object
14 Newton's third law of motion states that for every action there is: A A larger reaction B A smaller reaction C An equal and opposite reaction D No reaction
15 A gun recoils when a bullet is fired. This is best explained by: A Newton's first law B Newton's second law C Newton's third law D Law of friction
16 Which type of friction is also known as sliding friction? A Static friction B Kinetic friction C Rolling friction D Fluid friction
17 In a free-body diagram, the force exerted by a surface on an object perpendicular to the surface is called: A Weight B Normal reaction C Friction D Tension
18 The force that opposes the motion of an object when it moves through a fluid (liquid or gas) is called: A Tension B Normal reaction C Air resistance (drag) D Gravitational force
19 Which force holds the nucleus of an atom together? A Gravitational force B Electromagnetic force C Strong nuclear force D Weak nuclear force
20 According to Newton's second law of motion, F = ma, where 'a' is: A Acceleration B Area C Amplitude D Atomic mass
21 The type of friction that acts when an object rolls over a surface is called: A Static friction B Kinetic friction C Rolling friction D Sliding friction
22 When a gun is fired, it recoils. This is an example of: A Newton's first law B Newton's second law C Newton's third law D Law of gravitation
23 Which of Newton's laws is expressed by the equation F = ma? A First law B Second law C Third law D Law of gravitation
24 When a gun is fired, it recoils backward. This is best explained by: A Newton's first law of motion B Newton's second law of motion C Newton's third law of motion D The law of gravitation
25 According to Newton's second law of motion, F = ma, what does 'a' represent? A Acceleration B Area C Amplitude D Action