Question

The object moves along a straight line with an acceleration of 2m/s raise to the power 2.If its initial speed is 10m/s what will be its speed 5s later.

Answer 1

|                      2m/s²                                 |

Acceleration, a = 2m/s²
Initial speed, u = 10m/s
Time Taken,  t = 5 s
Final speed ,v  = ?
# We will use 1 eq. of motion:-
v=  u+at                 or
v= 10+ 2(5)             or
v= 10+10                or
v=  20                     or
v= 20 m/s

Answer 2

20m/s

a=2m/s

u=10 m/s,t=5 sec

v=u+at

v= 10+2×5

v=20m/sec