This topic contains a solution. Click here to go to the answer

Author Question: A projectile is fired over a horizontal surface at an angle of elevation of 70. Neglecting air ... (Read 203 times)

bucstennis@aim.com

  • Hero Member
  • *****
  • Posts: 532
A projectile is fired over a horizontal surface at an angle of elevation of 70. Neglecting air resistance, what are possible angles in flight between the acceleration vector and the velocity vector?
 a. 170 and 40
  c. 90 and 15
  b. 120 and 70
  d. none of the above

Question 2

A 200-N block, on a 30 incline, is being held motionless by friction. The coefficient of static friction between the block and the plane is 0.60 . The force due to friction is:
 a. 104 N.
  c. 60 N.
  b. 100 N.
  d. 0 N.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frogdreck123456

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

B

Answer to Question 2

B




bucstennis@aim.com

  • Member
  • Posts: 532
Reply 2 on: Jul 28, 2018
Gracias!


mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

For a complete list of videos, visit our video library