5. A particle moves along the x axis. Its position varies with time according to the expression x =10+ 20t-5t ², where x is in meters and t is in seconds. (a) Determine the displacement of the particle in the time intervals t= 0 to t= 2 s (b) Calculate the average velocity during this time interval. (c) Find the instantaneous velocity of the particle at the origin.
5. A particle moves along the x axis. Its position varies with time according to the expression x =10+ 20t-5t ², where x is in meters and t is in seconds. (a) Determine the displacement of the particle in the time intervals t= 0 to t= 2 s (b) Calculate the average velocity during this time interval. (c) Find the instantaneous velocity of the particle at the origin.
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Transcribed Image Text:5. A particle moves along the x axis. Its position varies with time according to the expression
x=10+ 201-5t ², where x is in meters and t is in seconds.
(a) Determine the displacement of the particle in the time intervals t= 0 to t= 2 s
(b) Calculate the average velocity during this time interval.
(c) Find the instantaneous velocity of the particle at the origin.
6) Given A(length 20 cm) and B(length 50 cm) vectors on plane on Fig 1.
a) Determine the components of the A and B vectors.
b) Determine the components of the R=A+B resultant vector.
c) Find an expression for R in terms of unit vectors. Find magnitude and direction of R
y
A
FIG 1.
60
30°
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