Question

a ball rolls down an inclined track 2m long in 4s .Find a)acceleration b)time takenc)speed

Answer 1

Here you go..Check the above image...If any doubts plz comment below..

Answer 2

Answer:

The acceleration is 0.25 m/s² , time taken is 4 sec and speed is 1 m/s.

Explanation:

Given that,

Distance = 2 m

Time t = 4 s

Initial velocity u = 0

(I). We need to calculate the acceleration

Using equation of motion

$s= ut+\dfrac{1}{2}at^2$

$2 = 0+\dfrac{1}{2}\times a\times(4)^2$

$a = 0.25\ m/s^2$

(II). Time taken is 4 sec.

(III). We need to calculate the speed

Using first equation of motion

$v = u+at$

$v = 0+0.25\times4$

$v =1\ m/s$

Hence, The acceleration is 0.25 m/s² , time taken is 4 sec and speed is 1 m/s.