5 1. Victor walks an average speed of 5]km/h. He needs to walk to school
which is 8 Km away. He needs to be there at 3pm what time should he set
off? Show your working.​

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s