I would apreciate an explanation on how to solve these problems in addition to t

Question

I would apreciate an explanation on how to solve these problems in addition to the correct answers. Thank you.

Part A A 0.450-kg ioe puck, moving eastwith a speed of 5.72 m/s,has a head-on collision with a 0.990-kg puck initially at rest. Assume that the ollision is perfectly elastic. What is the speed of the 0.450-kg puck after the collision? Express your answer to three significant figures and include the appropriate units. Submit My Answers Ghe Up Incorrect; Try Again; 3 attempts remaining Part B What is the direction ofthe velocity of the 0.450-kg puck after the collision? to the east to the west Submit My Answers Give Up Correct Part C What ise the speed of the 0.990-kg puck afer the collision? Express your answer to three significant figures and include the appropriate units. U2Value Units Submit My Answers Gve Up Part D What is the direction ofthe velocity ofthe 0.990-kg puck after the collision? to the east tothe west Submit My Answers Give Up Correct

Explanation / Answer

Here ,

mass of puck , m1 = 0.450 Kg

initial speed, u1 = 5.72 m/s

u2 = 0 m/s

m2 = 0.990 kg

let the final velocities are v1 and v2

using conservation of momentum

m1 * u1 + m2 * u2 = m1 * v1 + m2 * v2

0.450 * 5.72 = 0.450 * v1 + 0.990 * v2 -----(1)

as the collision is elastic

coeficient of restitution = 1

v2 - v1 = 5.72 ----(2)

solving 1 and 2

v1 = -2.145 m/s

v2 = 3.575 m/s

the speed of 0.450 kg puck after the collision is 2.145 m/s

b) the direction of velocity of 0.450 kg is to the west.

c)

the speed of 0.990 Kg is 3.575 m/s

d)

the direction of velocity of 0.990 Kg is to the east

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---