Question

Please answer question 67 and 69
No spams!!

Answer 1

Question 69.
Time taken to reach ground=5s

time taken to reach top=2.5s (as time of acent = time of decent)

average velocity=5m/s

distance travelled=2.5*5=12.5m

average speed= total distance/total time taken
=12.5 (up) +12.5 (during down) ÷ 5s
= 5 m/s