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Answer:
i. The momentum of the van before the collision can be calculated using the formula:
momentum = mass x velocity
where mass = 1200kg and velocity = 8m/s
momentum = 1200 x 8 = 9600 kg m/s
ii. The momentum of the van after the collision is zero since it came to a stop.
iii. The change in momentum of the van can be calculated using the formula:
change in momentum = final momentum - initial momentum
where final momentum = 0 and initial momentum = 9600 kg m/s
change in momentum = 0 - 9600 = -9600 kg m/s
iv. To calculate the force that acted on each driver, we can use the formula:
force = change in momentum / time taken
where change in momentum is -9600 kg m/s and time taken is 0.3s
force = -9600 / 0.3 = -32000 N
The negative sign indicates that the force acted in the opposite direction to the motion of the van.
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