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DP IB Physics: SL

Topic Questions

Home / IB / Physics: SL / DP / Topic Questions / 2. Mechanics / 2.1 Motion / Multiple Choice


2.1 Motion

Question 1

Marks: 1

The projectile path taken by an object with air resistance is a shorter horizontal distance to that without air resistance. 

The effects of air resistance could be decreased by a projectile with a

  • Rougher surface 

  • Larger surface to volume ratio

  • Smaller angle of release

  • Trajectory at a lower altitude

Choose your answer
  
Key Concepts
Projectile Motion

Question 2

Marks: 1

The graph shows the variation with time of the velocity of a car of fixed mass.

q12_motion_ib-sl-physics-mcq

 What can be deduced from the graph?

  • The car is never stationary

  • The car is always moving backwards

  • The car is always accelerating

  • The acceleration of the car is in the opposite direction to its velocity after time t

Choose your answer
  
Key Concepts
Motion Graphs

Question 3

Marks: 1

An object of mass 5.6 g is falling vertically at a constant speed in air. 

What is the approximate magnitude of the drag force acting on the object? 

  • 0 N 

  • 0.056 N

  • 56 N

  • 0.112 N

Choose your answer
  

Question 4

Marks: 1

A stone is released from a hot air balloon moving upwards with a uniform velocity of 25 m s–1

If the hot air balloon is 30 m high when the stone was dropped, what is its height when the stone hits the ground?

  • 180 m

  • 55 m 

  • 150 m

  • 60 m

Choose your answer
  

Question 5

Marks: 1

An object moves through one compete circle from point W to X to Y to Z and finally to W again.

q15_motion_ib-sl-physics-mcq

The distance between X and Z is 6 km. 

Which row is correct about the displacement and distance of the object? 

 

Displacement / km

Distance / km

A.

0

B.

0

C.

0

D.

    Choose your answer
      

    Question 6

    Marks: 1

    The graph shows the variation of acceleration a of an object with time t.

    q16_motion_ib-sl-physics-mcq

     

    Which graph shows how the velocity v of the object varies with t?

    q16-2_motion_ib-sl-physics-mcq

     

      Choose your answer
        
      Key Concepts
      Motion Graphs

      Question 7

      Marks: 1

      A student throws a stone with velocity 3 m s–1 at an angle θ to the vertical from the surface of a lake. Air resistance can be ignored. The acceleration due to gravity is g.

      What is the angle θ if the stone hits the surface of the lake 15 m from the student after 10 s?

      You may use the fact that sin 30 = 0.5.

      • 90º

      • 45º

      • 60º

      • 30º

      Choose your answer
        
      Key Concepts
      Projectile Motion

      Question 8

      Marks: 1

      A particle moving in a straight line has the displacement–time graph shown.

      q18_motion_ib-sl-physics-mcq

       

      Which row is correct about the average speed and average velocity of the particle?

       

       

      Average speed / m s–1

      Average velocity / m s–1

      A.

      0

      4

      B.

      0

      2

      C.

      4

      0

      D.

      2

      16

        Choose your answer
          

        Question 9

        Marks: 1

        An object is released from rest near the surface of the Earth and allowed to fall freely. 

        Which of the following correctly describes the speed and acceleration before the object reaches terminal velocity?  

          speed acceleration
        A. remains constant remains constant
        B. remains constant decreases
        C. increases remains constant
        D. increases decreases
          Choose your answer
            
          Key Concepts
          Projectile Motion

          Question 10

          Marks: 1

          A ball starts from rest and moves horizontally. Five positions of the ball are shown at time intervals of 0.50 ms. The horizontal distance between X, the initial position, and Y, the final position, is 0.060 m.

          q20_motion_ib-sl-physics-mcq

          What is the average acceleration of the ball between X and Y?

          • 48 m s–2

          • 60 m s–2

          • 19 200 m s–2

          • 30 000 m s–2

          Choose your answer