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Agata [3.3K]
3 years ago
6

WHO WANTS BRAINLIEST THEN ANSWER THIS QUESTION

Physics
1 answer:
lozanna [386]3 years ago
6 0

if the velocity of the car reduces from 70km/h to 50km/h then the speed of the car will be equal to the speed of the lorry...

thus the relative velocity will be 0

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Speed has only magnitude and no direction. 
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The Law of Conservation of Energy
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(a) +9.30 kg m/s

The impulse exerted on an object is equal to its change in momentum:

I= \Delta p = m \Delta v = m (v-u)

where

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v = final velocity

u = initial velocity

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m = 0.272 kg

u = -12.6 m/s

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\Delta t is the duration of the collision

In this situation, we have

\Delta t = 0.06 s

So we can re-arrange the equation to find the magnitude of the average force:

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