Which events have a causal relationship? A. It rained on Tuesday; it was sunny on Friday.
B. Jim has an apple orchard; Abdul has an orange orchard.
C. Jane went to the dentist; Kian had a fever.
D. Sam had not eaten breakfast; he was hungry.

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

When using the scientist method, which step comes last?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)