Wednesday

October 22, 2014

October 22, 2014

Posted by **willy** on Thursday, June 27, 2013 at 2:22pm.

fires the hook with an initial velocity of 85 m/s at an angle of 45o

with respect to the

horizontal. How far from the base of the cliff (d) does the hook land?

- physics -
**Henry**, Friday, June 28, 2013 at 8:43pmVo = 85m/s[45o].

Xo = 85*cos45 = 60.1 m/s.

Yo = 85*sin45 = 60.1 m/s.

Tr = (Y-Yo)/g = (o-60.1)/-9.8 = 6.1 s.

= Rise time.

h = Yo*t + 0.5g*t^2

h = 60.1*6.1 - 4.9*(6.1)^2 = 184.3 m.

d = Yo*t + 0.5g*t^2=184.3 + 120=304.3m

0 + 4.9t^2 = 304.3

t^2 = 62.1

Tf = 7.9 s. = Fall time.

d =Xo * (Tr + Tf)

d = 60.1*(6.1+7.9) = 841.4 m.

91,75s = 105 m.

**Answer this Question**

**Related Questions**

Physics - A cannon placed at the top of a 100.0 m high cliff fires horizontally ...

math - a room is 2.46m high.A picture hook,is 0.69m below the ceiling of the ...

physics - Batman is standing on top of a 201 m tall building. He kicks off the ...

physics - An object is launched horizontally from a cliff. The cliff is 80m high...

speech - what does hook mean in a speech? what is used to grab the audiences ...

physics - A boy sitting on the edge of a vertical cliff fires a rock with a ...

physics - A boy sitting on the edge of a vertical cliff fires a rock with a ...

Geography Hook for Presentation - Were doing a 5 minute presentation to the ...

math - What is the area of a hexagon all angles are right angles top 18 in side ...

science - If a hook exerts a force of .001N on the ceiling, how much force does ...