Question

on an obiect of mass 1 kg moving along X-axis with constant speed 8 m/s, a constant force 2 N is applied in positive y-direction. Find its speed after 4 seconds.​

Answer 1

2 perpendicular directions are independent to each other.....

since there is no force in X direction so there will not be any acceleration in X direction and hence velocity in X direction will remain constant.

In y direction,

applying F= ma

2=1.a

=> a= 2 m/s²

since acceleration is constant we can apply equations of motion

v= u + at

v = 0 + 2×4. { initial velocity in y 0 m/sec}

v= 8 m/s

so after 4 sec velocity of particle will be 8i + 8j m/sec

please mark as brainliest....

Answer 2

Answer:

321 GO

Explanation: