a force of 10 N acts on a body rest for 10s and causes it to move 20m during this period. what is mass of the body?
Answers
Answered by
0
Step 1: Acceleration calculation
Applying Newton's second law
∑F=ma
⇒F=ma
⇒10(N)=20(kg) a
⇒a=0.5m/s 2
Step 1: Final speed
Since acceleration is constant,
∴ Applying equation of motion
v=u+at
u= Initial speed =0
v= Final speed
v=0+0.5(m/s 2 )×10(s)
=5m/s
Step 2: Change in momentum ΔP
ΔP=m(v−u)
=20(5−0)kgm/s
=100kgm/s
Alternate solution
Impulse J=Force×time
=10(N)10(S)
=100NS
Impulse J=ΔP
ΔP=100kgm/s
Please mark me as the Brainliest
Similar questions
Math,
6 hours ago
English,
6 hours ago
Political Science,
11 hours ago
English,
11 hours ago
Social Sciences,
8 months ago
Math,
8 months ago