A constant force of 5N is being applied continuously on a body of mass 10 kg for 4 seconds. The body moves 800cm along a straight line. What is the velocity of the body when the force is applied initially?
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f=5N
m=10kg
t=4sec
s=800cm or 8m
using Newton's 2 law f=ma
5=10*a=> a=5/10 => a=2
now using 2nd equation of motion
s=ut+1/2a(t*t)
8=u*4+1/2*2*4*4. => 8=4u+4*4. => 8/16=4a => 1/2 =4a => 1/2*1/4=a. =>a=1/8 ans.
m=10kg
t=4sec
s=800cm or 8m
using Newton's 2 law f=ma
5=10*a=> a=5/10 => a=2
now using 2nd equation of motion
s=ut+1/2a(t*t)
8=u*4+1/2*2*4*4. => 8=4u+4*4. => 8/16=4a => 1/2 =4a => 1/2*1/4=a. =>a=1/8 ans.
eashanbhatia:
Whats ur initial velocity cming out to be?
1/8 m/s
Answered by
1
Answer:
1/8 is answer dear friend
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