Question

a body is projected upward with speed 60 metre per second. find the distance travelled by it in the 7th second (G is equal to 10 metre per second)​

Answer 1

Answer:

Explanation:

The answer is 5m

Answer 2

Answer:

5m

Explanation:

First find out when the velocity becomes zero.

v=0

u=60 m/s

g=-10 m/s²

v=u+gt

v=u+gt0=60-10t

v=u+gt0=60-10tt=6 sec

After 6 seconds the motion become free fall motion.

u=0

n=1

g=10m/s²

s=?

on applying nth second equation of motion,

s=u + ½g[2n-1]

s=0 + ½×10×[2×1 - 1]

s= 5×[1]

s=5m