I do ask questions, i just think that they are relying far to heavily on webassign, using it as much more of a teaching utility rather than an assesment utility.
Im currently 17 and doing my first year of A-levels, so I am basicly learning the fundementals.
The main problem is that each of the classes is taught different material in different orders, meaning not everyone knows the same content. As the webassign questions are the same for everyone...
At my school they also use webassign, its the only form of assesment they use, and also is the only form of homework they set, the majority of my year agrees that its pointless, as large portions of what is set for us is not relevant to our physics A-level.
The worst problem is the fact that...
Homework Statement
A block of mass m = 2.80 kg slides down a 30.0° incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 7.00 kg which is at rest on a horizontal surface, Fig. 7-41. (Assume a smooth transition at the bottom of the incline, an elastic collision, and ignore...
s=343 u=0 a=9.8
v^2=u^2+2as
v^2=2as
v^2=2*343*9.8
v^2=6722.8
v=82 m/s
the mistake you've made is putting gravity as -9.8 when it is actually 9.8 as the object is accelerating towards the earth.