help please. Thanks! hysics CHOS HWX PHYS 220.01 Signed in as Ryan Beck He CH05

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help please. Thanks!

hysics CHOS HWX PHYS 220.01 Signed in as Ryan Beck He CH05 HW Probl Problem 5.28 s previous | 4 of Problem 5.28 Part A Two carts, of inertias mi and m2, collide head-on on a low-friction track. Before the collision, which is elastic, cart 1 is moving to the right at 12 m/s and cart 2 is at rest. After the collision, cart 1 is moving to the left at 6 m/s If the direction is from left to right, what is the speed of cart 2 after the collision? Express your answer with the appropriate units. u=1 Value Units Submit My Answers Give Up Part B If m2 6 kg, what is the value of mi? Express your answer to two significant digits and include the appropriate units. Value Units m1 My Answers Give Up Submit Con

Explanation / Answer

Here , Let the final velocity of cart 1 is v1

and velocity of cart 2 is v2
A)

v1 = -6 m/s

u1 = 12 m/s

u2 = 0 m/s

Here , Using conservation of momentum ,
12 * m1 = -6m1 * m2*v2

v2 = 18*m1/m2

velocity of v2 is 18*m1/m2

B)

for m2 = 6 Kg

v2 = 18*6/m2

m2 = 108/v2 kg

the mass of m2 is 108/v2 kg

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