Help with Dynamics question??

Tones66

Hi. I couldn't do this question. If anyone fancies themselves could you post your solution.Any help will be appreciated. I'm stuck. Thanks.

An unplanned impact has occurred between vehicle A and a stationary vehicle B. Markings on the road indicate that after the impact B slid a distance of 2m before coming to rest. The coefficient of kinetic friction between B's tyres and the road is 0.7 and laboratory tests indicate that a coefficient of restitution e=0.4 is appropriate for this type of impact. Mass vehicle A = 1100kg. Mass vehicle B = 1300kg.

(a) Assuming that only single impact occurred, determine whether vehicle A was exceeding the relevant speed limit of 30 km/h before the impact.(15 marks)

(b) Determine the change in momentum for vehicle B. I the duration of the impact is estimated to be 0.01 s,estimate the average force exerted on B by A during impact.(5 marks)

(c)Determine the percentage of mechanical energy lost in the impact and briefly discuss possible explanations for the energy loss.(5 marks)

Tones66

Anyone got anything to offer?

Turbulent Bill

Make an effort to answer the question, then people might be more willing to help.

Cheeble

+1

What have you tried so far?
What approach have you used?
Where, exactly, have you got stuck?
What reference books have you used?
Show us some of your attempts?

You'll find folk helpful if you can show us you're not just being lazy.

Cheeble-eers