Projectile Motion - Initial Velocity

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SteveJW
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Good Afternoon, wondering if I could get some assistance. I'm not formally learning physics its just an interest I have, and try to complete problems during my spare time.

I have one particuar question that I'm stumped with, so any help would be great!

Q: You are asked by a film director to organise a stunt scene in which a motorbike mounts a ramp before safely jumping a wall. The wall is 4m high and the end of the ramp is 0.5m high and placed 10m back from the wall. What is the speed the stunt rider must drive off the ramp in order to jump the wall?

I understand that I need to split into horizontal and vertical components(?) then use uniform motion equation to get time taken and ultimately the initial velocity? Is this correct?

Kind regards

Steve
 
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what is the angle of the ramp
 
it doesn't say, but would I be correct in saying that Tan<x>3.5/10?
 
Sorry, should have said...tanx=3.5/10.

As I say l, any help is appreciated