Question

a particle moves in astraight line with a constant acceleration.it changes its velocity from 10m/s to 20m/s while passing through distance 135 m in t seconds.the value of t

Answer 1

Answer:

U=10m/s

V=20m/s

S=135m

We know,

2as=v2-u2

2×a×135=(20×20)-(10×1₩)

270a=400-100

a=300/270

a=10/9m/s2

• V=u+at

20=10+10/9×t

10=10/9×t

T=10×9/10

T=9 seconds

Hope this helps