Arocket ship travels 100 km in 10 s. what is the information that you know in order to you calculate the rocket ships average speed
a. d= 100 km
b. p= 100 km and t= 5 s
c. s= 100 km and v= 10 s
d. d= 100 km and t= 10 s

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.