a body is moving with a velocity of 100m/s accelerates uniformly at a rate of 10m/s^2 for a period of 20 sec . calculate the velocity & distance travelled in 30 seconds
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Answered by
11
v=u+at
v=100+10×20
v=100+200
v=300
then
s=ut +1
v=100+10×20
v=100+200
v=300
then
s=ut +1
samridhiisha:
S=ut+1 , how ??
Answered by
18
Hey.
Here is the answer.
as V= u + at
so, v = 100 + 10×20 = 100+200 = 300 m /s
so, velocity will remain 300 m/s after 30 s .◆
Distance travelled in first 20 s
s = ut + 1/2 at^2 = 100×20 + 1/2× 10×20×20 = 2000+2000= 4000 m
distance travelled in 20s to 30s
s = v×t = 300×10 =3000m
so, total distance travelled in 30s = 4000+3000=7000 m = 7 km◆
Thanks.
Here is the answer.
as V= u + at
so, v = 100 + 10×20 = 100+200 = 300 m /s
so, velocity will remain 300 m/s after 30 s .◆
Distance travelled in first 20 s
s = ut + 1/2 at^2 = 100×20 + 1/2× 10×20×20 = 2000+2000= 4000 m
distance travelled in 20s to 30s
s = v×t = 300×10 =3000m
so, total distance travelled in 30s = 4000+3000=7000 m = 7 km◆
Thanks.
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