Figure 1 (left) & Figure 2 (right) A 1.6 kg object is moving to the right in the

Question

Figure 1 (left) & Figure 2 (right)

A 1.6 kg object is moving to the right in the positive x direction with a speed of 1.5 m/s .

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.

B. What is the direction of the object’s velocity after the force ends?

C. 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.

D. What is the direction of the object’s velocity after the force ends?

Explanation / Answer

(A) impulse = F t =change in momentum

2 x 0.5 = 1.6 ( v - 1.5)

v = 2.125 m/s Or 2.1 m/s

(B) in the positive direction

(C) -2 x 0.5 = 1.6 ( v - 1,5)

v = 0.875 m/s Or 0.87 m/s

(D) in the positive direction

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