From Bridge
A stone is dropped into a river from a bridge 49 m above the water. 101 question?
My friend need the answer of this question hope someone could help
A stone is dropped into a river from a bridge 49 m above the water. Another stone is thrown vertically down 1.4 s after the first is dropped. The stones strike the water at the same time. What is the initial speed of the second stone? Give the answer in m/s and give three significant figures.
first we want to know what time it last that first stone is strike the water: x= 1/2 g *t^2
x = 49 m & g=9.8 --->t^2= 10 t = sqrt(10) = 3.162
then we have this equation : for the both of them > 1/2g*t^2 = 1/2g(t-1.4)^2 + V_o * (t -1.4) =49
then the inital speed of 2 stone is 19.19 m/s
![]() |
![]() 1901 niagara falls from bridge new york postcard $6.99 Time Remaining: 1h 21m Buy It Now for only: $6.99 |
![]() NORTH BRIDGE FROM AUBURN ME $24.97 Time Remaining: 1h 42m Buy It Now for only: $24.97 |
![]() PRE 1907 GREETINGS FROM THE WHITE MOUNTAINS WILLEY BROOK BRIDGE CONWAY SCENIC RR $34.99 Time Remaining: 1h 52m Buy It Now for only: $34.99 |
![]() MA ESPLANADE FROM WEST BOSTON BRIDGE BOSTON WHITE BORDER UNUSED $3.81 Time Remaining: 2h 34m Buy It Now for only: $3.81 |
![]() NEWPORT NY A VIEW FROM THE BRIDGE 1906 08 PC $4.99 Time Remaining: 2h 43m Buy It Now for only: $4.99 |
![]() Portland ME Turkeys Bridge from Eastern Promenade 1908 $9.99 Time Remaining: 2h 51m Buy It Now for only: $9.99 |
![]() Keokuk Hamilton Il Bridge Keokuk Ia Greetings from Keokuk $1.99 Time Remaining: 2h 57m |
![]() SAN FRANCISCO OAKLAND BAY BRIDGE SEEN FROM TWIN PEAKS $6.50 Time Remaining: 3h 7m Buy It Now for only: $6.50 |
![]() ST PAUL MN HARRIET ISLAND FROM HIGH BRIDGE 1911 $29.99 Time Remaining: 4h 53m Buy It Now for only: $29.99 |
![]() Third Ave Skyline View West From New Bridge Minneapolis Minnesota 1920s Postcard $1.88 Time Remaining: 5h 22m |
![]() N Y Schenectady State St from R R Bridge Trolleys PC $4.50 Time Remaining: 5h 42m Buy It Now for only: $4.50 |
![]() Towanda PA Looking South from James Street Bridge $9.95 Time Remaining: 5h 57m Buy It Now for only: $9.95 |
![]() Allegheny River from Suspension Bridge Warren PA 1904 $5.99 Time Remaining: 6h 19m Buy It Now for only: $5.99 |
![]() Wappingers Falls NY VIEW FROM STONE BRIDGE IN WINTER Postcard $9.99 (1 Bid) Time Remaining: 7h 14m |
![]() 1938 RPPC Russian from Preston Bridge PATTERSON POSTCARD $14.99 Time Remaining: 7h 31m Buy It Now for only: $14.99 |
![]() GREETINGS FROM NATURAL BRIDGE VIRGINIA POSTCARD $5.50 Time Remaining: 7h 40m Buy It Now for only: $5.50 |
![]() Niagara Falls NY Summer 7 1897 American Souvenir Card Co Postcard Vw from Bridge $15.00 Time Remaining: 8h 22m Buy It Now for only: $15.00 |
![]() NY VIEW WEST CANADA CREEK FROM BRIDGE HERKIMER PRELINEN USED IN 1912120178 $7.94 Time Remaining: 8h 30m Buy It Now for only: $7.94 |
![]() THE LIMA FLOOD OF 1913 EAST FROM C H D RAILROAD BRIDGE LIMA OHIO OH $5.50 (2 Bids) Time Remaining: 8h 43m |
![]() Cape Cod Canal From Bourne Bridge Buzzards Bay Cape Cod Massachusetts $0.99 Time Remaining: 8h 54m |
![]() Sherman Mills ME Park View From Bridge RPPC Postcard $12.99 Time Remaining: 9h 2m Buy It Now for only: $12.99 |
![]() Looking Up the Blackstone River from Exchange St Bridge Pawtucket Rhode island $2.10 Time Remaining: 9h 37m Buy It Now for only: $2.10 |
![]() Port Huron Michigan Huron Avenue from Bridge 1920 $7.95 Time Remaining: 9h 46m |
![]() 1912 State Street Looking North From Canal Bridge Schenectady NY New York PC $3.99 Time Remaining: 10h 7m |
![]() ESOPUS CREEK FROM GLENERIE BRIDGE BY MOONLIGHT SAUGERTIES NY NEW YORK $2.95 Time Remaining: 10h 52m |
![]() Multiview Bridge Greetings from Brownsville TX $4.50 Time Remaining: 12h 20m Buy It Now for only: $4.50 |
![]() VIEW FROM BROOKLYN BRIDGE NEW YORK EARLY 1900S $5.00 Time Remaining: 12h 47m Buy It Now for only: $5.00 |
![]() NEW YORK Looking at Downtown Skyline from under Brooklyn Bridge 1956 $6.00 Time Remaining: 17h 16m |
![]() BrooklineMABrookline Parkwayfrom Longwood Ave Bridge $6.15 Time Remaining: 20h 1m Buy It Now for only: $6.15 |
![]() San Francisco Golden Gate Bridge Used postcard from 1971 $2.00 Time Remaining: 20h 11m |
![]() Saddle River Brook from Hollywood Avenue Bridge Ho Ho Kus NJ $5.50 Time Remaining: 20h 13m |
![]() MOHAWK RIVER COVERED BRIDGE 1808 1874 SPANNED FROM SCHENECTADY SCOTIA $0.99 (1 Bid) Time Remaining: 20h 22m |
![]() BRIDGE FROM VIRGINIA TO WASHINGTON DC OLD CARS POSTCARD $6.75 Time Remaining: 22h 55m Buy It Now for only: $6.75 |
![]() HOLYOKE MA FROM ACROSS RIVER BRIDGE ANTIQUE POSTCARD $6.75 Time Remaining: 23h 2m Buy It Now for only: $6.75 |
![]() Hill to Hill Bridge from South Side BethlehemPennsylva $5.99 Time Remaining: 23h 7m Buy It Now for only: $5.99 |
![]() BEACON STREET ESPLANADE FROM HARVARD BRIDGE BOSTON UNUSED SEE NOTE $2.99 Time Remaining: 23h 8m |
![]() AUSABLE CHASM NY FROM HYDES CAVE BRIDGE $2.99 Time Remaining: 1d Buy It Now for only: $2.99 |
![]() Postcard Bridge From Boardwalk Mackinac IslandMichigan $3.95 Time Remaining: 1d 48m Buy It Now for only: $3.95 |
![]() Postcard Greetings From Mackinac BridgeMichigan MI $3.95 Time Remaining: 1d 48m Buy It Now for only: $3.95 |
![]() PC Girard Ave Bridge from the Zoo Philadelphia Pa $4.95 Time Remaining: 1d 1h 16m Buy It Now for only: $4.95 |
![]() Battle CreekMIView from Washington Street Bridge 1911 $6.88 Time Remaining: 1d 1h 16m Buy It Now for only: $6.88 |
![]() Manchester NH Amoskeag Bridge From Skeag Side 1905 20 $5.99 Time Remaining: 1d 1h 18m Buy It Now for only: $5.99 |
![]() POST CARD ALTON BAY NEW HAMPSHIRE VIEW FROM BRIDGE 1911 $3.71 Time Remaining: 1d 1h 35m Buy It Now for only: $3.71 |
![]() A240 POSTCARD NIAGARA FALLS NY VIEW FROM BRIDGE $3.99 Time Remaining: 1d 1h 49m Buy It Now for only: $3.99 |
![]() KinsmanOH Old Stone Bridge Greetings from Kinsman 1929 $5.45 Time Remaining: 1d 2h 12m Buy It Now for only: $5.45 |
![]() 1967 GREETINGS FROM CAPE COD BRIDGE VINTAGE POSTCARD $1.47 Time Remaining: 1d 2h 30m Buy It Now for only: $1.47 |
![]() Pittsburgh Pennsylvania Postcard Skyline View from Manchester Bridge River c1960 $4.00 Time Remaining: 1d 2h 41m Buy It Now for only: $4.00 |
![]() River Front from Lafayette St Bridge Tampa Fl PC 6662 $5.00 Time Remaining: 1d 2h 43m Buy It Now for only: $5.00 |
![]() NEWPORT NY A VIEW FROM THE BRIDGE SHALLOW WATERFALLS TOWN PRE 07 P C $4.00 Time Remaining: 1d 3h 39m Buy It Now for only: $4.00 |
![]() Postcard Skyline from Hawthorne Bridge in Portland OR $7.99 Time Remaining: 1d 4h 37m Buy It Now for only: $7.99 |
![]() Exit From West Bridge Of Memorial Causeway Clearwater Beach FL $3.00 Time Remaining: 1d 5h 40m |
![]() 1913 MORRIS NY BRIDGE VINTAGE TOWN VIEW MAILED FROM ANTIQUE ARTINO OLD POSTCARD $9.99 Time Remaining: 1d 8h 20m |
![]() SCARCE 1920 ARENA NY IRON BRIDGE TOWN VIEW MAILED FROM DPO ANTIQUE OLD POSTCARD $9.99 Time Remaining: 1d 8h 23m |
![]() BOOTHBAY ME Toll Bridge from Southport c1910 Postcard $6.89 Time Remaining: 1d 8h 38m Buy It Now for only: $6.89 |
![]() FRANKLIN NH View from Daniel Bridge c1910 Postcard $6.89 Time Remaining: 1d 8h 44m Buy It Now for only: $6.89 |
![]() Panoramic View from Falls Bridge LAWRENCE MA c1905 $2.75 Time Remaining: 1d 8h 54m |
![]() SCHENECTADY NY STATE ST FROM RR BRIDGE OLD POSTCARD $4.75 Time Remaining: 1d 8h 57m Buy It Now for only: $4.75 |
![]() View from Daniell Bridge Franklin NH c1909 Old Postcard $4.80 Time Remaining: 1d 9h 9m Buy It Now for only: $4.80 |
![]() Night Scene of San Francisco Oakland Bay Bridge from Yerba Buena Island $0.99 Time Remaining: 1d 9h 38m |
![]() St Anthony Falls from Stone Bridge Minn MN Postcard $4.00 Time Remaining: 1d 10h Buy It Now for only: $4.00 |
![]() HARPERS FERRY WEST VIRGINIA POTOMAC RIVER FROM RR BRIDGE PC $3.99 Time Remaining: 1d 14h 59m |
![]() LockportNYLooking Down Locks from Pine StBridge1905 $7.95 Time Remaining: 1d 16h 3m Buy It Now for only: $7.95 |
![]() Fort Pitt Tunnel and Bridge from Golden Triangle of PittsburghPennsylvania $8.09 Time Remaining: 1d 17h 39m Buy It Now for only: $8.09 |
![]() GREETINGS FROM INDIANA TWO COVERED BRIDGES 1962 $9.08 Time Remaining: 1d 19h 18m Buy It Now for only: $9.08 |
![]() MOONLIGHT FROM WHITES BRIDGE SEBAGO LAKE ME MAINE $3.95 Time Remaining: 1d 21h 35m Buy It Now for only: $3.95 |
![]() PC DB General View of Niagara Falls from Bridge Maid of the Mist Postcard $3.99 Time Remaining: 1d 22h 20m Buy It Now for only: $3.99 |
![]() Billerica MA River from Bridge c1910 Postcard $3.69 Time Remaining: 1d 22h 31m Buy It Now for only: $3.69 |
![]() Vintage 1939 Linen Downtown San Francisco From the Bay Bridge California $0.99 Time Remaining: 1d 23h 7m |
![]() State St Schenectady NY Looking North from Canal Bridge 1911 $0.99 Time Remaining: 2d 4m |
![]() VINTAGE BRISTOL BURLINGTON BRIDGE FROM BRISTOL PA SIDE USED POSTCARD $5.99 Time Remaining: 2d 58m |
![]() 1913 The Island from Sunderland Bridge Mt Sugar Loaf PC $5.99 Time Remaining: 2d 1h 19m Buy It Now for only: $5.99 |
![]() Vintage Postcard Shenandoah River From Bridge Woodstock Virginia 1907 $3.99 Time Remaining: 2d 2h 4m |
![]() MELVIN VILLAGE NEW HAMPSHIRE Old Mill Bridge View from River 1907 pmk $5.95 Time Remaining: 2d 2h 14m |
![]() View from below bridge Haverhill MA post card $6.00 Time Remaining: 2d 2h 30m Buy It Now for only: $6.00 |
![]() Postcard 934579 Good Shepherd Chburch from Anthony Wayne Bridge Toledo OH $2.25 Time Remaining: 2d 3h 13m Buy It Now for only: $2.25 |











































































