Question

0-2 A trolley, while going down an inclined plane, has an accelera
while going down an inclined plane, has an acceleration of 2 cm s. What will be its velocity
3 s after the start?
2-3 ball is thrown upward with a velocity of 5 m/s. If the acceleration of the ball during its motion is 10
m/s in the downward direction, what will be the height attained by the ball and how much time will it
take to reach there?​

Answer 1

Answer:

Explanation:

1)initial velocity =  0cm/s

acceleration a =2cm/s^2

time t = 3 s

now

v=u+at

v=0+2*2

v=6cm/s

2)u=5m/s

v=0m/s

a=(-10m/s^2)

s=?

t=?

a)now    v=u+at

          0=5+(-10)t

          -5=-10t

t=0.5 s

b)v^2-u^2=2as

0-25=-20s

-25=-20s

s=1.25 m