A toy train is pushed forward and released at x i = 3.5 m with a speed of 2.5 m/

Question

A toy train is pushed forward and released at xi = 3.5 m with a speed of 2.5 m/s . It rolls at a steady speed for 2.2 s , then one wheel begins to stick. The train comes to a stop 7.8 m from the point at which it was released.

Part A

What is the train's acceleration after its wheel begins to stick?

Express your answer using two significant figures.

A toy train is pushed forward and released at xi = 3.5 m with a speed of 2.5 m/s . It rolls at a steady speed for 2.2 s , then one wheel begins to stick. The train comes to a stop 7.8 m from the point at which it was released.

Part A

What is the train's acceleration after its wheel begins to stick?

Express your answer using two significant figures.

Explanation / Answer

V2=2as
s= 7.8 - 2.5*2.2= 2.3
a= 6.25/(2*2.3)= 1.358 m/s2

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