Physics siraj

1. Which of the following is a scalar quantity?

• Displacement

• Velocity

• Speed

• Acceleration

2. The SI unit of velocity is

• m/s²

• m/s

• km/h

• cm/s

3. A car moving with uniform velocity will have

• A) Constant speed but changing direction
  
  
  

• B) Constant speed and constant direction

• C) Increasing speed

• D) Decreasing speed

4. The slope of a distance-time graph represents:

• A) Acceleration

• B) Velocity

• C) Speed

• D) Displacement

5. A body is said to be in uniform motion if:

• A) It covers equal distances in equal intervals of time

• B) Its speed keeps changing

• C) It moves in a circular path

• D) It moves with variable acceleration

6. If a car starts from rest and attains a velocity of 20 m/s in 5 seconds, what is its acceleration?

• A) 2 m/s²

• B) 4 m/s²

• C) 5 m/s²

• 
  D) 10 m/s²

7. What will be the displacement of an object after completing one full circle?

• A) Equal to the circumference

• B) Equal to the radius

• C) Zero

• D) Equal to the diameter

8. A freely falling object experiences:

• A) Constant acceleration

• B) Increasing acceleration

• C) Decreasing acceleration

• D) Zero acceleration

9. Which equation of motion relates velocity, acceleration, and displacement?

• A) v = u + at

• B) s = ut + ½ at²

• C) v² = u² + 2as

• D) None of the above

10. A velocity-time graph with a straight line parallel to the time axis represents:

• A) Uniform velocity

• B) Uniform acceleration

• C) Non-uniform acceleration

• D) Object at rest