A car of mass 1000 kg is moving with a velocity of 10 \mathrm{m.s^{-1}}. If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of the car at the end of 25s will be:

a) 25 \mathrm{m.s^{-1}}

b) 40 \mathrm{m.s^{-1}}

c) 10 \mathrm{m.s^{-1}}

d) 250 \mathrm{m.s^{-1}}

Answer:

The correct answers is **c)** 10 \mathrm{m.s^{-1}}

"hey guys welcome to lido q a video
i am vinit your leader tutor bringing
you this question on your screen
a car of mass 1000 kg is moving with a
velocity of
10 meter per second if the velocity time
graph for this car is a
horizontal line parallel to the
time axis then the velocity of the car
at the end of
25 second will be so let us draw the
velocity time graph right
so let us say
time is along x axis
and velocity
is along y axis
increasing as you go now the question
says
if the velocity time graph for this car
is a
horizontal line parallel to the time
axis
so let's say
ah the velocity is 10 so let's say
this is 2
4 6
8 and 10
and this is time
so the initial values velocity is 10
and the velocity
a graph time graph is a horizontal line
parallel to the time axis
now we see the velocity is constant
throughout
hence the velocity will be
25 meter per second at any given time
right irrespective of the mass and
and the time taken right therefore
velocity after
25 seconds
is equal to
10 meter per second right
so the velocity will still be
10 meter per second a constant velocity
throughout
right guys wasn't that easy
okay if you still have a doubt please
leave a comment below
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video
until then bye kids keep learning"

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