# Completely lost on this one

## Homework Statement

A H2 was headed North and a convertible Mini Cooper was headed East. Due to faulty traffic signals, they collided, leaving a skid mark 7.6 m long at an angle of 51 degrees North of East. What was the initial velocity of each vehicle and, if the speed limit was 30 mph, who should get a ticket

Using the above skid data, what would the intitial velocities and who should get the ticket if the East-bound car was a Smart Car and the North-bound car was the convertible Mini?

Had to toss out the rest of the template as I really am in the dark. Seems really simple but I can't for the life of me recall how to attack this.

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tiny-tim
Homework Helper
Hi 123bob123!

(i assume the question gives you masses, and the coefficient of fricyion?)

Momentum is always conserved in collisions, so use conservation of momentum (and find the final velocity from the stopping distance and the standard constant acceleration equations).

What do you get?

According to the problem itself, it doesn't give the mass for the vehicles or the coefficient which is what is throwing me for a loop. Is there any way to do this?

mass of H2 > then mass of Mini coop

assume same tires same road so friction coeff is the same

Do you mind running me through the problem or a similar example? As I'm not entirely sure how I would be to make assumptions without the actual numbers.

tiny-tim