Question

A 1200 kg car moving north at 50 km/h collides with a 1600-kg car moving east at 30 km/h. The cars stick together, and the wreckage moves off at an initial speed of
a. 27 km/h
b. 38 km/h
c. 39 km/h
d. 58 km/h
*follow up question
• The direction in which the wreckage of he preceding collision moves off is
a. 39° E of N
b. 45° E of N
c. 51° E of N
d. 54° E of N