4. The velocity-time graph of a bus and a lorry is shown in Diagram 1. Graf halaju-masa bagi sebuah bas dan sebuah lori ditunjukkan dalam Rajah 1. v (m s-) 12- Bus / Bas Lorry / Lori t (s) 6. 8 Diagram 1/ Rajah 1 What is the separation between the bus and the Jorry at time t = 8 s?

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Q: Didnt answer the second question

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Q: o its just the same answer youre just adding a degree sign

A: Yes , according to laws of reflection angle of incidence is equal to angle of reflection.

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.