Question

answer as fast as possible the correct abs will be marked branliest​

Answer 1

Answer:

speed between 30 min and 40 min = 15km/h

time = (40-30)min= 10min

distance covered between 30 min and 40 min = (15 × 10/60)km = 2.5 km

speed between 10min and 40 min = 15km/h

time = 30min

distance covered between 10 min and 40 min = (15 × 30/60)km = 7.5km

speed of particles is 15km/h

Answer 2

Answer:

a:) speed b/w 30min and 40 min

=) t=40-30/60 =1/6hrs and speed(v)=constant =15km/hr

acc. to formula s=v.t

=15×1/6

=2.5km

b:) so here ,

t=1/2hr.(40-10/60)

v=15km/hr.

s=v.t

=15×1/2=7.5km

c:)speed of the particle is constant here

that is =)15km/hr

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