What is the initial total mechanical energy of projectile

Reference no: EM13325884

A 58.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.38 102 m/s from the top of a cliff 156 m above level ground, where the ground is taken to be y = 0.

(a) What is the initial total mechanical energy of the projectile?

(b) Suppose the projectile is traveling 97.8 m/s at its maximum height of y = 354 m. How much work has been done on the projectile by air friction?

(c) What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up?

m/s

Reference no: EM13325884

Questions Cloud

Find what evidence of database marketing : Find what evidence of database marketing is currently being used

Explain the molar heat capacity at constant pressure : A system comprised of 2.900×10^1 g of Ne(g) cools from 170.0°C to 45.0°C at a constant pressure of 5.5 atm. The molar heat capacity at constant pressure for Ne(g) is 20.80 J K?1 mol?1. calculate q,w,delta E, ANDdelta H

How far will the ball travel : How far will the ball travel if the bat is 1 m in length if the instaneous linear velocity of the bat is 37.5 m/s at the moment of impact

Explain a decision that you have made at work or concerning : That means that businesses, consumers and whole societies face tradeoffs whenever they make a decision.

What is the initial total mechanical energy of projectile : A 58.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.38 102 m/s from the top of a cliff 156 m above level ground, What is the initial total mechanical energy of the projectile

Explain the relationship between the products formed : What is the relationship between the products formed when (R)-3-methyl-1-pentene is reacted with HBr? Question 15 options: Constitutional isomers Diastereomers Enantiomers Meso compound

Explain the conjugate acid in a phosphate : Which of these ions best represents the conjugate acid in a "phosphate" buffer at physiological pH? Explain. H2PO4^-, HPO4^2-, PO4^3-

Prepare the annual proforma financial statements : Prepare the annual proforma financial statements (income statement and balance sheet) that you would expect Linda to prepare based on her comments about her expectations for the business.

Determine the maximum achieved rocket thrust : A small rocket maintains a constant thrust as to produce an acceleration of 2 m/s^2. determine the maximum achieved rocket thrust

User Account

All Pages