A plane is flying to a city 746 km directly north of its initial location. The plane maintains a speed of 178 km/h relative to the air during its flight. (a) If the plane flies through a constant headwind blowing south at 55.5 km/h, how much time (in h) will it take to reach the city? h (b) If instead the plane flies through a constant tailwind blowing at 55.5 km/h, how much time (in h) will it take to reach the city? h (c) If instead the plane flies through a constant crosswind blowing east at 55.5 km/h, how much time (in h) will it take to reach the city? h

Q: daredevil drove his motorcycle up an incline at 25 degree angle with the horizontal and drove off…

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Q: Pete and Sue, two reckless teenage drivers, are racing eastward along a straight stretch of highway.…

A: Given Pete's velocity vp=88km/h Sue's velocity vs=117km/h

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Q: A long jumper leaves the ground with an initial velocity of 14 m/s at an angle of 30° from the…

A:

Q: A projectile is fired from ground level at speed 22 m/s at angle 55 degrees above horizontal.  (a)…

A: a Time of flight, T = 2 u sin θgT =2 22 m/s (sin 55o)9.8 m/s2=3.68 sec

Q: A cannon is set to launch horizontally off of a cliff. You measure that it takes 5.19 s for the…

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A:

Q: u see a jet making a landing in the northern direction, moving at a speed of 90m/s right after…

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A:

Q: An airplane flies horizontally at a speed of 541 km/h and drops a crate that falls to the horizontal…

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Q: A diverging (concave) LENS can form images that are?

A: A diverging (concave) lens. Find: Characteristic of image produced by concave lens.

Q: A woman walks 2.05 km south and then 2.75 km east, all in 2.60 hours. (a)What is the magnitude (in…

A:

Q: certain airplane has a speed of 251.4 km/h and is diving at an angle of e = 30.0° below the…

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Q: Problem 2: You are firing a cannon from the back of a train. The train is heading due east at a…

A:

Q: A cannonball is launched from the top of a flat mountainside, which slopes upwards at 35 degrees…

A: This is the case of the projectile motion along the inclined plane. Consider the following figure.…

Q: A baseball is hit by a batter with an initial velocity of 95 miles/hour at 45 degrees above the…

A: T=2usinθg

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A:

Q: An acrobat is launched from a cannon at an angle of 60° above the horizontal. The acrobat is caught…

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Q: Question 2: A stone is thrown from the top of a building upward at an angle of 30.0° to the…

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A:

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A: height of cliff (h) = 31 m time taken to hear the sound  = 2.67 s speed of sound in air = 343 m/s

Q: A stone is thrown from ground level with a speed of 10 m/s at an angle of 35° above the horizontal.…

A:

Q: A discus is thrown from ground level with a speed of 260 m/s at an angle of 60° above the…

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Q: A person walks 2.80 km north and then 2.00 km east, all in 2.20 hours.   (a) What is the magnitude…

A: Draw the figure of the problem.

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.