Two snowmobiles, frosty and snowflake, of equal masses suffer a rear-end collision. just before the collision, frosty's velocity is 25 m/s east and snowflake's velocity is 10 m/s in the same firection. just after the collision, frosty is moving 13m/s towards the east.

a. what is snow flakes velocity immediately after the collision?

b. was this an elastic collision? justify your answer by calculation.

. i am sooo lost..

A. 22

B. NO

Explanation:

A.

During a collision , the net external force on the system is zero .

hence , the total momentum of the system can be CONSERVED .

let the mass of frosty and snowflake be m ;

therefore from principle of conservation of momentum ,

so ,

answer for A. 22

B.

The collision is NOT ELASTIC.

this is because if it had been elastic , the coefficient of restitution should have been 1 but it isnot i.e

≠ 1

thus it's an inelastic collision.