Question

If a body travels 20m in 10s starting from rest then the acceleration of the particle is
a)0.4m/second square
b)0.6m/second square
c)1m/second square
d)0.8m/second square

Answer 1

the answer is d part 0.8 m per second square .Apply the second equation of motion.

Answer 2

Apply the second equation of motion

s = ut + 1/2 ft exp 2

Here u =0, f = 20, t= 30

So, s = 1/2* 900* 20 = 9000 meters.