Turn on thread page Beta
    • Thread Starter
    Offline

    8
    ReputationRep:
    A cannon is fired at 30° to the horizontal with an initial velocity of 20m/s and the cliff is 30m above ground.

    I found out the horizontal velocity is 17.32m/s and the vertical is 10m/s. I know the time taken to reach it's peak velocity is 1.02 seconds and I need to find out how far the cannon travels in total from the top of the cliff but I'm not really sure how to do this.

    Can someone talk me through it please?
    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    if you know how long it took to go up....
    if will take the same time to go down....
    then add the time it takes to go the extra 30m down (i assume you count accel due to grav as 9.8)...

    add all these times up....

    use horizontal velocity...

    s=vt

    BAM ill take the pos feedback (note i never checked your original workings)
    • Thread Starter
    Offline

    8
    ReputationRep:
    (Original post by BttrLtThnNvr)
    if you know how long it took to go up....
    if will take the same time to go down....
    then add the time it takes to go the extra 30m down (i assume you count accel due to grav as 9.8)...

    add all these times up....

    use horizontal velocity...

    s=vt

    BAM ill take the pos feedback (note i never checked your original workings)
    Thank you! Omg I get it now

    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by TinM)
    Thank you! Omg I get it now

    Posted from TSR Mobile
    Glad I could help, dunno how I got negged though
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 7, 2013

University open days

  • Heriot-Watt University
    School of Textiles and Design Undergraduate
    Fri, 16 Nov '18
  • University of Roehampton
    All departments Undergraduate
    Sat, 17 Nov '18
  • Edge Hill University
    Faculty of Health and Social Care Undergraduate
    Sat, 17 Nov '18
Poll
Black Friday: Yay or Nay?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.