Question 1:

A car with a mass of 980 kg is initially traveling east toward an intersection with a speed ofv_c =21.8 m/s and a 1500 kg pickup is traveling north toward the same intersection. The car and truck collide at the intersection and stick together. After the collision, the wreckage (car and truck) moves off in a direction of42.0 above thex-axis. Determine the initial speed of the truck in meters per second.

initial speed of the truck= m/s ?

Question 2:

Two ice pucks (one orange and one blue) of equal mass are involved in a perfectly elastic glancing collision as shown in the figures below. The orange puck is initially moving to the right at v_oi =7.90 m/s, strikes the initially stationary blue puck, and moves off in a direction that makes an angle of? =35.0 with the horizontal axis while the blue puck makes an angle of? =55.0 with this axis as in the second figure.Note that for an elastic collision of two equal masses, the separation angle? +? = 90.0.