A 2.2kg object is moving to the right in the positive xdirection with a speed of

Question

A 2.2kg object is moving to the right in the positive xdirection with a speed of 1.5m/s .
Part A
Object experiences the force shown in (Figure 1) . What is the object's speed after the force ends?
Express your answer to two significant figures and include the appropriate units.

Part B
What is the direction of the object

figure 2 Object experiences the force shown in (Figure 2) . What is the object's speed after the force ends? Express your answer to two significant figures and include the appropriate units. v = Part D What is the direction of the objects velocity after the force shown in (Figure 2) ends? To the right To the left The object will stop Figure 1 A 2.2kg object is moving to the right in the positive xdirection with a speed of 1.5m/s . Part A Object experiences the force shown in (Figure 1) . What is the object's speed after the force ends? Express your answer to two significant figures and include the appropriate units. Part B What is the direction of the objects velocity after the force shown in (Figure 1) ends? To the right To the left The object will stop

Explanation / Answer

a)

From Graph

F=2 N and t=0.5 s

acceleration

a=F/m =2/2.2 =0.909 m/s2

object's speed after the force ends

V=Vo+at =1.5 +0.909*0.5

V=1.95 m/s

b)

Since final velocity is positive ,the object is moving to the right

c)

From graph

F=-2 N and t=0.5 s

acceleration

a=-F/m =-2/2.2 =-0.909 m/s2

object's speed after the force ends

V=1.5+(-0.909)*0.5

V=1.04 m/s

d)

Since final velocity is positive ,the object is moving to the right

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