Write cquations to describe the position, velocity, and accel- cration as a function of time. 1. a fastball thrown by a pitcher with an initial velocity of 28.9 m/s which is slowed down by air resistance so that it's velocity as a function of time is given by v(t)- 28.9-2.4 t. give the position as the distance from home plate (initially -18.4 m). 5. your phone when you accidentally nudge it off a 1.5 m tall table.

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600

What are some important factors to consider when choosing a warm-up before your workout?