« previous next »

Author Question: Which of the following statement is not true about projectile motion? (Read 2353 times)

Hawke

  • Hero Member
  • *****
  • Posts: 679
on: Jun 23, 2013
CHOICES:
a. Horizotal velocity of a projectile is constant
b. It is a combination of two independent motions- vertical and horizontal
c. The motion of the projectile released downward is accelerated
d. Both horizontal and vertical velocities are constant

If you have an answer please state the reason.
Thanks!


Sandstorm

  • Sr. Member
  • ****
  • Posts: 268
Reply #1 on: Jun 23, 2013
d. is wrong
horizontal velocity is always constant
vertical velocity is always not constant

the constant in vertical motion is the acceleration of gravity
but not the vertical velocity


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

camila

  • Hero Member
  • *****
  • Posts: 705
Reply #2 on: Jun 23, 2013
d.Both horizontal and vertical velocities are constant is the wrong statement about projectile motion.


Sandstorm

  • Sr. Member
  • ****
  • Posts: 268
Reply #3 on: Jun 23, 2013
Sorry, but I think it depends on the environment in which the experiment is performed.

Usually, answer D would be false.

;-D Out is space, maybe D could be true.


Jesse_J

  • Sr. Member
  • ****
  • Posts: 282
Reply #4 on: Jun 23, 2013
d; vertical motion is accelerated thus velocity changes


Jones

  • Full Member
  • ***
  • Posts: 145
Reply #5 on: Jun 23, 2013
A&D
 Neither the horizontal or the vertical velocities are constant.
The vertical is increased by the force of gravity.
The horizontal is decreased by air resistance.
But the path of the projectile is a combination of the two.


aero

  • Hero Member
  • *****
  • Posts: 512
Reply #6 on: Jun 23, 2013
D. The vertical velocity is not constant as a downward force of gravity acts on it.


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #7 on: Jun 23, 2013
All but, b.


« previous next »
 

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Range of Motion of the Hip Joint, Flexion with Knee Flexed Range of Motion of the Hip Joint, Flexion with Knee Flexed
True Forget-Me-Not True Forget-Me-Not
A Heliocentric Explanation of Retrograde Motion A Heliocentric Explanation of Retrograde Motion
Our Motion Through the Microwave Background Our Motion Through the Microwave Background
Apply effleurage with wave motion to posterior cervical region. Use fingertips to slide along ... Apply effleurage with wave motion to posterior cervical region. Use fingertips to slide along ...
Motion Motion
Video: Hemodynamics Animation

For a complete list of videos, visit our video library