Question

16.
The velocity of a body, under the influence of
uniform acceleration, becomes zero in one hour.
The corresponding distance covered is 39 m. The
distance covered by the body in next one hour,
will be
(1) Zero
(2). 13 m
(3) 78 m
(4) 39 m please guys help fast. answer in my booklet is 39m.not able to understand. pls answer fast​

Answer 1

Answer:

39

Explanation:

short answer = Energy symmetry

the uniform acceleration given in the question made the velocity from v to 0 in one hour

show show the same uniform acceleration will make the velocity is zero to V in one hour

naugarh distance travel in the first case is L is equal to 39 metre so in the next case also it will be L which is equal to 39 metre

by formula method

s = vt - 1/2 at^2 (for 1st one hour)

s= 39

v=0

t= 1

so -39×2 = a

now s = ut+1/2at^2 (for next 1 hour)

s=?

t=1

u=0

so s = -1/2×(2×-39) × 1^2

so s=39

Answer 2

Answer:

39 is the correct answer