Question

At a given instant the speed of scooter is 54 kilometre per hour and after 10 second it becomes 18 kilometre per hour calculate the total distance travelled when it comes to rest​

Answer 1

Answer:

105 metre

Explanation:

velocity=54km/hr=54*5/18=15metre/sec

initial velocity =18km/hr=18*5/18=5metre/sec

time period=10 sec

by this formula,

v=u+at we can calculate a

15=5+a*10

a=1metre/sec2

s=ut+1/2at2 .

s=distance by this formula we can calculate

5*10+1/2*1*10*10

105 metre