« previous next »

Author Question: How to calculate the velocity of projectile when it hits the ground and its displacement? (Read 846 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?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

How to calculate present value (Question 2) How to calculate present value (Question 2)
How to calculate present value (Question 4) How to calculate present value (Question 4)
How to calculate fuel costs How to calculate fuel costs
Calculate the number of sodium ions in 0.375moles of Na2CO3.10H20 Calculate the number of sodium ions in 0.375moles of Na2CO3.10H20
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
Calculate KP for the following reactions at the indicated temperature. Calculate KP for the following reactions at the indicated temperature.
Video: Digestive System Animation

For a complete list of videos, visit our video library