# Answer to Question #17480 in Mechanics | Relativity for saif

Question #17480

Q2. The altitude of a rocket in the first half-minute of its ascent is given by x = bt2, where x is the altitude and b = 2.90 m/s2 is a constant.

a) Find a general expression for the rocket’s velocity as a function of time.

b) Find the rocket’s instantaneous velocity at t = 20 s.

c) Find an expression for the average velocity of the rocket. Find the average velocity after during the first 20 seconds.

d) Compare your two velocities (instantaneous and average). Is there a difference and if so why?

a) Find a general expression for the rocket’s velocity as a function of time.

b) Find the rocket’s instantaneous velocity at t = 20 s.

c) Find an expression for the average velocity of the rocket. Find the average velocity after during the first 20 seconds.

d) Compare your two velocities (instantaneous and average). Is there a difference and if so why?

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