1. Echoes return in 2.5 s to a person standing in front of a cliff. How far away is the cliff of the peed of the sound in air at sea level is 343 m/s when the temperature is 20° C 2. The airplane takes off at 9:00 AM and flies in a straight path at 300 km/hr until 1:00 PM, its speed is increased to 400 km/hr and it maintain this speed in the same direction until it lands at 3:00 PM. What is the average speed of the airplane fir the entire flight? 3. An object that is undergoing uniform acceleration from rest moves 7.4 m in 2.5 s. what is the acceleration of the object?
1. Echoes return in 2.5 s to a person standing in front of a cliff. How far away is the cliff of the peed of the sound in air at sea level is 343 m/s when the temperature is 20° C 2. The airplane takes off at 9:00 AM and flies in a straight path at 300 km/hr until 1:00 PM, its speed is increased to 400 km/hr and it maintain this speed in the same direction until it lands at 3:00 PM. What is the average speed of the airplane fir the entire flight? 3. An object that is undergoing uniform acceleration from rest moves 7.4 m in 2.5 s. what is the acceleration of the object?
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Transcribed Image Text:Solve the following problems. Show your solution.
1. Echoes return in 2.5 s to a person standing in front of a cliff. How far away is the
cliff of the peed of the sound in air at sea level is 343 m/s when the temperature
is 20° C
2. The airplane takes off at 9:00 AM and flies in a straight path at 300 km/hr until
1:00 PM, its speed is increased to 400 km/hr and it maintain this speed in the
same direction until it lands at 3:00 PM. What is the average speed of the
airplane fir the entire flight?
3. An object that is undergoing uniform acceleration from rest moves 7.4 m in 2.5 s.
what is the acceleration of the object?
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