Recent content by LOannie234

An empty rubber balloon has a mass of 0.0132 kg . The balloon is filled with helium at a density of 0.185 kg/m3 At this density . the balloon has a radius of 0.474 m . If the filled balloon is fastened to a vertical line, what is the tension in the line? The acceleration of gravity is 9.8 m/s^2 I...

Then v=(square root)9.8m/s^2*122m/2cos(43.1) v=20.8924m/s If so x=vt t=x/v t=5.839s Am I following the correct path?

So for the horizontal velocity, would the equation be v=(square root of)mg/2cos(theta)?

A golf ball (m = 71.7 g) is struck a blow that makes an angle of 43.1 with the horizontal. The drive lands 122 m away on a flat fairway. The acceleration of gravity is 9.8 m/s^2. If the golf club and ball are in contact for 6.62 ms, what is the average force of impact? Neglect air resistance...

i tried to do 71.7(vx-v0x)/delta t and 71.7(vy-v0y)/delta t but i don't know where to go after that

thanks so much! Moving onto that other problem... where would i start? I have no idea

Using the conservation of energy, mgh=(1/2)mv^2 so v=(2gh)^(1/2) which gets me 8.4m/s This is then the velocity he enters the water, so v=vf+at 0=8.4m/s+a(2.3s) a=-3.652m/s^2 Then F=ma, F=(88kg)(-3.652m/s^2)=-321.391 N This is still not close to the answer. Where else am I going wrong?

A golf ball (m = 71.7 g) is struck a blow that makes an angle of 43.1 with the horizontal. The drive lands 122 m away on a flat fairway. The acceleration of gravity is 9.8 m/s^2 If the golf club and ball are in contact for 6.62 ms, what is the average force of impact? Neglect air resistance.

can you direct me in the right direction? I honestly have no idea how to do this problem. I have been working it for nearly an hour

i used the equation vi=vf+at where vi=0 and a=9.81 and t=2.3 and solved for vf which ended up being -22.54. i then plugged that into the equation m(v-vo)/delta t and got the wrong answer

A(n) 88 kg man, standing erect, steps o! a 3.6 m high diving platform and begins to fall from rest. The man comes to rest 2.3 s after reaching the water. The acceleration of gravity is 9.8 m/s^2 What average force did the water exert on him? My friend and I have tried many different...