A city bus accelerates away from a bus stop at the acceleration shown. At the next stop, a tourist boards the bus with 1,000-kg of recording equipment, and when the bus driver starts going again, he notices he has to press harder on the gas pedal to maintain the same acceleration.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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the bal will not change its velocity.

i believe the answer is a hope it and is correct

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.