**Question1**

The force vector A has a magnitude of 91.0 Newton’s and points due east. The force vector B has magnitude of 134 Newton’s and points 78° north of east. Utilize the graphical method and find out the magnitude and direction of following forces.

(a) Vector Fa − Vector Fb (give the direction with respect to due east)

(b) Vector Fb − Vector Fa (give the direction with respect to due west).

**Question2**

The final shear strength of steel is taken to be 2.80 109 Pa, what force is necessary to punch through a steel plate 1.60 cm thick? Suppose the superhero's fist has cross-sectional area of 9.00 101 cm2 and is approximately circular.

**Question3**

Two soccer players start from rest, 37 meters apart. They run directly towards each other and both players are accelerating. The first player has the acceleration whose magnitude is 0.15 m/s^2 and second player's has the acceleration of 0.43 m/s^2. How much time passes by they collide?

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