Suppose you push on a 10 kg block with with a force of 5kgm/s2 for 5 seconds. a)

Question

Suppose you push on a 10 kg block with with a force of 5kgm/s2 for 5 seconds.

a) What is its acceleration for those 5 seconds?
b) what is its speed at the end of those 5 seconds?
c) plot its speed as a function of time from 0 to 10 seconds.
d) plot its position as a function of time from 0 to 10 seconds.
Include labels and scales on both axes for both graphs.
e) what is its position after 10 seconds.
f) redo this entire problem including a frictional force of 3 N opposing the motion. What value of coefficient of friction is implied by a 3 N frictional force in this case?

Explanation / Answer

a)f=ma this is force equation .5/10=0.5m/s2

b)v=u+at,intial velocity 0,v=0.5x5=2.5m/s

c)graph shows linearity between speed and time

d)distance=speedxtime,at 0 to 5 seconds distance =2.5x5=12.5m,2.5x10=250m

e)it will move beyond 250m

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