Homework Answers
Since velocity is constant during 9 to 18s hence average acceleration will be zero during this time period . Therefore ostrich will move with constant velocity i.e with 6 m/s
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An ostrich accelerates from rest until reaching a speed of 6.0 A graph of the ostrich's...
In a race, a homing pigeon accelerates from rest with constant acceleration for 40s to reach...
In a race, a homing pigeon accelerates from rest with constant acceleration for 40s to reach a cruising speed of 22 ms1 Assume that the pigeon flies in a straight line. Give numerical answers to two significant figures. (a) What is the acceleration of the pigeon? (b) Over what distance does the pigeon accelerate? (c) Draw a graph of the velocity v (in metres per second) of the pigeon 12 121 against the time t (in seconds), from the time...
No SIM 12:47 PM 숱 khanacademy.org A dog chases a cat until the dog gets tired....
No SIM 12:47 PM 숱 khanacademy.org A dog chases a cat until the dog gets tired. A graph of its velocity over time is shown below. Velocity In 6 Time (s) 4 8 12 16 20 24 What is the dog's average acceleration from 0 to 12 seconds? Answer using two significant figures. Do 4 problems Check again
No SIM 12:47 PM 숱 khanacademy.org A dog chases a cat until the dog gets tired....
No SIM 12:47 PM 숱 khanacademy.org A dog chases a cat until the dog gets tired. A graph of its velocity over time is shown below. Velocity In 6 Time (s) 4 8 12 16 20 24 What is the dog's average acceleration from 0 to 12 seconds? Answer using two significant figures. Do 4 problems Check again
A speed-time graph is shown below: Speed vs. Time Speed (cm/s) -> Time (seconds) What is...
A speed-time graph is shown below: Speed vs. Time Speed (cm/s) -> Time (seconds) What is the average acceleration of the object represented in the graph above over the eight seconds? 0.5 cm/s 1.0 cm/s2 1.5 cm/s2 2.0 cm/s2 An object starts at rest. Its acceleration over 30 seconds is shown in the graph below: Acceleration vs. Time Acceleration (m/s) 153 Time is) 205 In the graph above, what is the instantaneous speed of the object after the first five...
Problem Solving 1. What is the acceleration of a car racer that accelerates from 0 to...
Problem Solving 1. What is the acceleration of a car racer that accelerates from 0 to 90 m/s in 6.0 seconds? 2. What is the acceleration of a truck driver moving at 18 m/s and applies the brakes and stops in 4.0 seconds? 3. An automobile accelerates from rest to 8.8 m/s in 3.0 seconds using the first gear then changes to second gear. The automobile reaches 22.0 m/s and is shifted into third gear. After 7.0 seconds in third...
A merry-go-round starts from rest and accelerates with angular acceleration 0.020 rad/s2 for 18 s ....
A merry-go-round starts from rest and accelerates with angular acceleration 0.020 rad/s2 for 18 s . How many revolutions does it make during this time? Express your answer using two significant figures. What is its average angular speed? Express your answer using two significant figures.
1 (a) A car accelerates from rest to a speed of 10.9 m/s in 8.4 seconds....
1 (a) A car accelerates from rest to a speed of 10.9 m/s in 8.4 seconds. Find the magnitude of the average acceleration. (b) If I accelerate for 5.3 seconds in my car at 2.6 m/s2 when I have an initial velocity of 20.9 m/s, what final velocity do I have? (c) If I apply an acceleration in the opposite direction to my initial velocity for 7.4 seconds of -3.2 m/s2 when I have an initial velocity of +21.6 m/s,...
A car on a straight level road, starts from rest and accelerates to a speed of...
A car on a straight level road, starts from rest and accelerates to a speed of 1,846 ft/'s in 49 seconds. What is the car's average acceleration in ft/s??
At t=0, a bicycle accelerates constantly from rest until it has traveled a distance of 40...
At t=0, a bicycle accelerates constantly from rest until it has traveled a distance of 40 meters. Draw a velocity vs. time graph
1000-kg sports car accelerates from rest to 95 km/h in 6.0 s. What is the average...
1000-kg sports car accelerates from rest to 95 km/h in 6.0 s. What is the average power delivered by the engine? Express your answer to two significant figures and include the appropriate units.
In a race, a homing pigeon accelerates from rest with constant acceleration for 40s to reach a cruising speed of 22 ms1 Assume that the pigeon flies in a straight line. Give numerical answers to two significant figures. (a) What is the acceleration of the pigeon? (b) Over what distance does the pigeon accelerate? (c) Draw a graph of the velocity v (in metres per second) of the pigeon 12 121 against the time t (in seconds), from the time...
No SIM 12:47 PM 숱 khanacademy.org A dog chases a cat until the dog gets tired. A graph of its velocity over time is shown below. Velocity In 6 Time (s) 4 8 12 16 20 24 What is the dog's average acceleration from 0 to 12 seconds? Answer using two significant figures. Do 4 problems Check again
No SIM 12:47 PM 숱 khanacademy.org A dog chases a cat until the dog gets tired. A graph of its velocity over time is shown below. Velocity In 6 Time (s) 4 8 12 16 20 24 What is the dog's average acceleration from 0 to 12 seconds? Answer using two significant figures. Do 4 problems Check again
A speed-time graph is shown below: Speed vs. Time Speed (cm/s) -> Time (seconds) What is the average acceleration of the object represented in the graph above over the eight seconds? 0.5 cm/s 1.0 cm/s2 1.5 cm/s2 2.0 cm/s2 An object starts at rest. Its acceleration over 30 seconds is shown in the graph below: Acceleration vs. Time Acceleration (m/s) 153 Time is) 205 In the graph above, what is the instantaneous speed of the object after the first five...
Problem Solving 1. What is the acceleration of a car racer that accelerates from 0 to 90 m/s in 6.0 seconds? 2. What is the acceleration of a truck driver moving at 18 m/s and applies the brakes and stops in 4.0 seconds? 3. An automobile accelerates from rest to 8.8 m/s in 3.0 seconds using the first gear then changes to second gear. The automobile reaches 22.0 m/s and is shifted into third gear. After 7.0 seconds in third...
A car on a straight level road, starts from rest and accelerates to a speed of 1,846 ft/'s in 49 seconds. What is the car's average acceleration in ft/s??
1000-kg sports car accelerates from rest to 95 km/h in 6.0 s. What is the average power delivered by the engine? Express your answer to two significant figures and include the appropriate units.
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