The figure is the potential-energy diagram for a 550 g particle that is released

Question

The figure is the potential-energy diagram for a 550 g particle that is released from rest at A. (Figure 1)

Part A

What is the particle's speed at B?

Express your answer to two significant figures and include the appropriate units.

vB=

Part B

What is the particle's speed at C?

Express your answer to two significant figures and include the appropriate units.

Part C

What is the particle's speed at D?

Express your answer to two significant figures and include the appropriate units.

Figure 1 of 1

The figure is the potential-energy diagram for a 550 g particle that is released from rest at A. (Figure 1)

Part A

What is the particle's speed at B?

Express your answer to two significant figures and include the appropriate units.

vB=

Part B

What is the particle's speed at C?

Express your answer to two significant figures and include the appropriate units.

vC =

Part C

What is the particle's speed at D?

Express your answer to two significant figures and include the appropriate units.

vD=

Figure 1 of 1

Explanation / Answer

It is simply conservation of energy between points

Part A) between A & B

Ua = Ub + (KE)b

put values from graph

5 = 2 + (KE)b

(KE)b = 3 = 1/2 m v^2

v = 3.3 m/s

Part B) between A & C

Ua = Uc + KEc
5 = 3 + KEc

KEc = 2 = 1/2 m v^2

v = 2.7 m/s

Part C)between A & D

Ua = Ud + KEd

5 = 0 + KEd = 1/2 m v^2

v = 4.3 m/s

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