« previous next »

Author Question: How to calculate the velocity of projectile when it hits the ground and its displacement? (Read 862 times)

Melanie

  • Full Member
  • ***
  • Posts: 204
on: Jun 23, 2013
Knowing:    A projectile is fired from the ground vertically upward with an initial velocity of 29 m/s and arrives at its max altitude in 3 seconds


coco

  • Hero Member
  • *****
  • Posts: 739
Reply #1 on: Jun 23, 2013
In the absence of air friction, a projectile will always hit the ground at the same speed at which it was launched, providing the two points are the same elevation.

BTW, t = V/g = 29/9.81 = 2.956 sec (OK, so that's 3 sec to 1 sig fig...)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Melanie

  • Full Member
  • ***
  • Posts: 204
Reply #2 on: Jun 24, 2013
Thanks :D


« previous next »
 

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

A herd of barren-ground caribou at the Thelon River. This subspecies is a long-distance migrant A herd of barren-ground caribou at the Thelon River. This subspecies is a long-distance migrant
A strike by 800 women shoemakers in Lynn, Massachusetts, in 1860. In 1851 a Lynn shoemaker had adapt A strike by 800 women shoemakers in Lynn, Massachusetts, in 1860. In 1851 a Lynn shoemaker had adapt
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
How to calculate monthly mortgage payments at varying amortization periods (Question 1) How to calculate monthly mortgage payments at varying amortization periods (Question 1)
A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ... A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ...
calculate the quantities required to make 5 lb of hydrophilic ointment: calculate the quantities required to make 5 lb of hydrophilic ointment:
Video: Vasectomy

For a complete list of videos, visit our video library