Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

A.2.15 Collisions and Explosions in Two-Dimensions – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
In a 2D collision momentum is conserved
Only along the original direction
In each perpendicular direction
Only in the vertical
Only for elastic collisions
2.
A 1.0 kg mass moving east at 6.0 m s⁻¹ and a 1.0 kg mass moving north at 8.0 m s⁻¹ stick together. The speed afterwards is
7.0 m s⁻¹
10 m s⁻¹
14 m s⁻¹
5.0 m s⁻¹
3.
A stationary object splits into two fragments. One travels east. The other must travel
West
East
North
At any angle
4.
Identical masses collide elastically, one initially at rest, and do not collide head-on. They leave at
180° to each other
90° to each other
45°
0°
5.
A 2.0 kg object initially at rest explodes into 1.0 kg pieces moving at 3.0 m s⁻¹ east and 4.0 m s⁻¹ north. A third piece is not present, so this is impossible. Why?
Energy is not conserved
The speeds are too slow
Momentum is not conserved since the total is not zero
Fragments must be equal
6.
A smooth ball hits a smooth wall at 30° to the wall and rebounds elastically. The component of velocity parallel to the wall
Reverses
Becomes zero
Is unchanged
Doubles
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
Part of Theme A — Space, Time and Motion — see every lesson and quiz in this unit.
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