Question

Two parts:

a) An object with an initial mass m_i=7and an initial velocity v_i=6m/s making an angle of 40 degrees with the +x axis has, after a time 4 seconds, final velocity v_f=3making an angle of 0 degrees wrt -x. a) Determine the net force acting on the mass corresponding to F_net=(p_f-p_i)/delta(t), needed to produce that change in momentum. b) Now, assuming there is gravity plus a second, contact force acting on the mass, estimate the magnitude of the second contact force applied to the mass over the time t seconds (using F(contact) + F(gravity) = F(net)) and draw the vectors demonstrating graphical addition.

b) An 6 kg mass, moving at an angle of 40 degrees wrt the +x axis with an initial velocity magnitude |5| collides inelastically with an 8 kg mass, moving at an angle of 50 degrees wrt the +x axis and with an initial velocity magnitude v_{1= 3m/s}. Determine a) the angle that the composite object makes with the axis of your choice, b) the magnitude of the final velocity of the single object, as well as c) the heat generated in the collision.

Answer 1