Below are six identical baseballs shortly after being thrown. At the instant sho

Question

Below are six identical baseballs shortly after being thrown. At the instant shown, the baseball's velocity is indicated, along with the distance the ball has traveled and the elapsed time since leaving the throwers hand. Rank these baseballs on the basis of the magnitude of the force of the thrower's hand currently acting on them. 10 m 0.2s 15 m 0.2s 50 m/s 10 m 20 m 0.2 s 40 m/s 0.4 s 40 m/s 15 m 5.0 m 04s 30 m/s 50 m/s Largest 12 The ranking cannot be determined based on the informution provided Explain the reason for your ranking

Explanation / Answer

(A)

Apply kinematic equation

s= ut + 1/2 at^2

s- ut= 1/2 at^2

10 - 30(0.2)= 1/2 a ( 0.2)^2

a= 200 m/s^2

FA= m ( 200 m/s)^2

(B)

Apply kinematic equation

s= ut + 1/2 at^2

s- ut= 1/2 at^2

15 - 50(0.2)= 1/2 a ( 0.2)^2

a= 250m/s^2

FB= m ( 250 m/s)^2

(C)

Apply kinematic equation

s= ut + 1/2 at^2

s- ut= 1/2 at^2

10 - 40(0.2)= 1/2 a ( 0.2)^2

a= 100 m/s^2

FC= m ( 100 m/s)^2

(D)

Apply kinematic equation

s= ut + 1/2 at^2

s- ut= 1/2 at^2

20 - 40(0.4)= 1/2 a ( 0.4)^2

a= 50 m/s^2

FD= m ( 50 m/s)^2

(E)

Apply kinematic equation

s= ut + 1/2 at^2

s- ut= 1/2 at^2

15 - 30(0.4)= 1/2 a ( 0.4)^2

a= 37.5 m/s^2

FE= m ( 37.5 m/s)^2

(F)

Apply kinematic equation

s= ut + 1/2 at^2

s- ut= 1/2 at^2

5 - 50(0.1)= 1/2 a ( 0.1)^2

a= 0 m/s^2

F_F= m ( 0 m/s)^2

FB>FA>FC>FD>FE>FF

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