Question

an athlete uniformly increases its speed from rest at 1 metre per second square the time taken to complete 200 metre race is
A. 14s
B.20s
C. 5s
D.10s​

Answer 1

Answer:

s=ut+1/2atsquare

Explanation:

• 200=0+1/2*1*t we get t*t=400 which implies t=20 sec