. What is velocity A, a. +16m/s b. -16m/s c. +5.8m/s d. -5.8m/s 6. What is veloc

Question

. What is velocity A, a. +16m/s b. -16m/s c. +5.8m/s d. -5.8m/s 6. What is velocity B a. +28m/s b. -28m/s C. +34m/s d. -34m/s 7. What is velocity A a. +16m/s b. -16m/s c. +5.8m/s d. -5.8m/s 8. What is velocity By a. +16m/s b. -16m/s c. +34m/s d. -34m/s 9. What is the resultant velocity R a. 38m/s b. 42m/s c. 93m/s d. 7.2m/s 10. A batter hits a baseball with a top speed of 130mph. What is the longest homerun that can be achieved? a. 236m b. 336m C. 366m d. 466m 11. How long is the baseball in the air? a. 10.4s b. 9.4s C. 8.4s d. 6.4s

Explanation / Answer

5. component of A along x direction which is negative

Ax= -17 sin(70) = -16 m/s => (b)

6. component of B along x direction which is positive

Bx= 44 cos(50) = 28.28 m/s => (a)

7. component of A along y direction which is negative

Ax= -17 cos(70) = -5.81 m/s => (d)

8. component of B along y direction which is negative

Bx= -44 sin(50) = -34 m/s => (d)

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