Joseph drove for 3 hours at the speed of 40 km/h (kilometers

Mathematics

1 answer:

bezimeni [28]3 years ago

7 0

Answer:

250 km.

Step-by-step explanation:

Alright, so for this problem we can split it into two parts. Since distance = speed*time, the first 3 hours give us 3*40 or 120 km, and the last 2 hours give us 2*65, or 130 km. Adding these together, we get a final distance of 250 km.

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Flura [38]

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6 0

3 years ago

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4. Bradford hopped into his Ford Mustang GT to rush to Diana and tell her

OLEGan [10]

Answer:

See explanation and image attached

Step-by-step explanation:

Acceleration refers to the rate of change of speed with time. We can see that between 0 and 4.7 seconds he accelerated quickly . That means that the rate of change of speed with time was greatest between 0 and 4.7 seconds.

A graph of the motion is shown in the image attached. We can see that he maintained a constant speed after 4.7 seconds.