A 1500 kg car moving east at 17 m/s collides with a 1800 kg carmoving south at 1

Question

A 1500 kg car moving east at 17 m/s collides with a 1800 kg carmoving south at 15 m/s and the two cars stick together.
a) What is the velocity of the cars right after thecollision? b) What is the direction (degrees south of east)? c) How much kinetic energy was converted to another formduring the collision?
I got 16 m/s for a and it is incorrect. Please show your workso I may understand this type of problem. Thanks!!
a) What is the velocity of the cars right after thecollision? b) What is the direction (degrees south of east)? c) How much kinetic energy was converted to another formduring the collision?
I got 16 m/s for a and it is incorrect. Please show your workso I may understand this type of problem. Thanks!!

Explanation / Answer

Let the cars stick together moving with velocity at an angle with respect to East then,

Along x-axis we have as,

1500*17+1800*0=(1500+1800)*vcos

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