what will the work done be when A bullet of mass 10 grams at rest is accelerated to a velocity of 20 metre per second in 10 seconds calculate the power developed by the bullet during 10 seconds
Answers
Answered by
17
For calculating work we need Force and Displacement ;
v=20 m/s
u=0 m/s (at rest)
t=10 s
v= u+at << Formula
20=0+10a
a= 2m/s^-2
m= 10g=1/100 kg
F=ma=1/100*2=1/50 N
v^2-u^2=2aS << Formula
400-0=4S
S=100 m
W=F*S << Formula
W=1/50*100=2J
P=W/t << Formula
P=2/10= 0.2 W
Answered by
1
Answer:
Work done (W) = 2 Joules and Power (P) = 0.2 Watt
Explanation:
Attachments:
Similar questions