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Figure below shows a car with a dummy driver before and after a collision test:

      

Figure below shows a car with a dummy driver before and after a collision test:
p442019951.png
The mass of the dummy driver is 90kg. The impact time to reduce the dummy’s speed from
45m/s to zero is 1.2 seconds:
(i) Calculate the average force on the dummy during impact
(ii) State the main energy transformation during the collision
(iii) Calculate how much of the dummy’s energy is transformed during the collision

  

Answers


sharon
p4420191004.png
(ii) Kinetic energy – Heat + sound + P.E(deformation;
iii)p4420191005.png
sharon kalunda answered the question on April 4, 2019 at 07:07


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