Recent content by marindo

yes = ="

actually i don't think its V_avg, but like Initial velocity... thats why ur "v_avg" was used... V_avg = Vf - Vi/2 ... and through ur previous calculation of 8900m/1620s = 5.49 m/s its obvious its not V_avg... i could be wrong, but that's my take on it anyways

Homework Statement A runner hopes to compleate the 10,000m run in less than 30.0min. After running at a constant speed for exactly 27.0min there are still 1100m to go. The runner must then accelerate at 0.20 m/s^2 for how many seconds in order to achieve the desired time. *note* person does...

yeah nice to have a little support to the train of thought, and totally forgot about the energy lost to heat from friction x x

actually... you don't need acceleration Recall Impulse : F x Δt = ΔP [Change in momentum] = mΔv therefore to find Force we just F = ΔP / Δt = [(m_1)(v_i) - (m_1)(v_f)] / Δt essentially anyways... make sure to take into account all momentums... anyways.. u have ur initial momentum of...

how i see it isn't really momentum... momentum is seen as mass x velocity = mv impulse = F_avg * time = m (vf - vi) essentially i don't see it really as any loss of momentum but loss in energy because this kid is sliding down from an icy hill, this is obviously a potential energy question...