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Ostrovityanka [42]
3 years ago
11

Tyler traveled from town F to town G. For the first 2.5 hours, he travelled at a constant speed of 60 km/h. For the next 1.5 hou

rs, he travelled at a constant speed of 80 km/h. What was the average speed for the whole journey?
Physics
1 answer:
tamaranim1 [39]3 years ago
6 0

Answer:

67.5km/hr

Explanation:

The average speed traveled is the total distance divided by the total time taken.

  Average speed  = \frac{total distance }{total time}  

   Distance  = speed x time

Time 1  = 2.5hrs

Speed 1  = 60km/h

    Distance 1   = 2.5 x 60  = 150km

Time 2  = 1.5hrs

Speed  2  = 80km/h

   Distance 2  = 1.5 x 80  = 120km

 Average speed  = \frac{150km + 120km }{2.5 + 1.5}   = 67.5km/hr

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an airplane flies at a speed of 100 m/s and starts to accelerate constantly at a rate of 50 m/s2. how fast is the plane flying a
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Answer:

331.7m/s

Explanation:

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Initial velocity  = 100m/s

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Solution:

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