I have hard time to understand them. please show your work.. thanks Part A: A tr

Question

I have hard time to understand them. please show your work.. thanks

Part A: A traveler pulls on a suitcase strap at an angle 36 degree above the horizontal. If 933 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?

a) 87 N

b) 77 N

c) 62 N

d) 94 N

e) 117 N

Part B: A 1200 kg cannon fires a 100 kg cannonball at 51 m/s. What is the recoil velocity of the cannon? Assume that frictional forces are negligible and the cannon is fired horizontally.

a) 4.3 m/s

b) 5.1 m/s

c) 4.7 m/s

d) 51 m/s

e) 43 m/s

Part C: A potter

Explanation / Answer

1a) T cos 36 * 15 = 933

Tensin = 76.88 N

b)1200* v = 100*51

v= 4.25 m/s

c) (5.8*0.65*0.65*0.5) + (2.1*0.41*0.41) = 1.578

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