Aplane flew 2,100 km with the jet stream in 2.5 hours. the return flight against the jet stream took 3.75 hours. find the speed of the jet stream and the airspeed of the plane.

336km/h

Step-by-step explanation:

Average speed=Total distance covered/Total time taken

Distance covered=2,100km

Time taken=2.5 hours+3.75 hours

=6.25hours

Average speed=distance/time

=2,100km/6.25hours

=336km per hour.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

n

step-by-step explanation: