Question

an object moves along a straight line with an acceleration of 1m/s2 if its initial speed is 10m/s. find its speed after 5 seconds?

Answer 1

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$\color{green}solution :$


Acceleration (a) = 1 m/s^2

Initial velocity (u) = 10 m/s

Time (t) = 5 seconds

Final velocity (v) = ?

$\boxed{using \: formula : v = u + at}$


v = 10 + (1 × 5)

=> v = 10 + 5

=> v = 15 m/s

$\boxed{\therefore \: v = 15 \: ms {}^{ - 1} }$


HOPE IT HELPS

Answer 2

Answer:

Explanation:

using (i) eq. of motion

v=u+at

u=10m/s

a=2m/s^2

t=2m/s

v=10+2×2

v=10+4

v=14m/s

The velocity of the object 2 seconds later will be 14m/s.