A stone is thrown with an initial speed of 15 m/s at an angle of 53$\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s2 and air resistance is negligible, then what is the speed of the rock as it hits the ground?

A) 15 m/s B) 21 m/s C) 30 m/s D) 36 m/s A) 15 m/s B) 21 m/s C) 30 m/s D) 36 m/s

A stone is thrown with an initial speed of 15 m/s at an angle of 53$\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s2 and air resistance is negligible, what is the magnitude of the horizontal displacement of the rock?

A) 38 m B) 46 m C) 66 m D) 90 m A) 38 m B) 46 m C) 66 m D) 90 m

A stone is thrown with an initial speed of 15 m/s at an angle of 53$\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s2 and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits the ground?

A) 9.0 m/s B) 18 m/s C) 26 m/s D) 29 m/s A) 9.0 m/s B) 18 m/s C) 26 m/s D) 29 m/s

Exam 3: Vectors and Two-Dimensional Motion

A stone is thrown with an initial speed of 15 m/s at an angle of 53 $\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s²and air resistance is negligible, then what is the speed of the rock as it hits the ground?

(Multiple Choice)

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Question 21

A taxicab moves five blocks due north, five blocks due east, and another two blocks due north.Assume all blocks are of equal size.What is the magnitude of the taxi's displacement, start to finish?

(Multiple Choice)

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Question 22

A runner circles a track of radius 100 m one time in 100 s at a constant rate.The greatest change in his velocity from his starting velocity:

(Multiple Choice)

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Question 23

A string attached to an airborne kite is maintained at an angle of 40 $\degree$ with the horizontal.If a total of 120 m of string is reeled in while bringing the kite back to the ground, what is the horizontal displacement of the kite in the process? (Assume the kite string doesn't sag.)

(Multiple Choice)

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Question 24

The following force vectors act on an object: i) 50.0 newtons at 45.0 $\degree$ north of east and ii) 25.0 newtons at 30.0 $\degree$ south of east.Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction?

(Multiple Choice)

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Question 25

Which type of quantity is characterized by both magnitude and direction?

(Multiple Choice)

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Question 26

Vector is 3 m long and vector is 4 m long.The length of the sum of the vectors must be:

(Multiple Choice)

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Question 27

A fireman, 50.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 30.0 $\degree$ above the horizontal.If the initial speed of the stream is 40.0 m/s, at what height will the stream of water strike the building?

(Multiple Choice)

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Question 28

A boat moves through the water in a river at a speed of 8 m/s relative to the water.The boat makes a trip downstream and then makes a return trip upstream to the original starting place.Which trip takes longer?

(Multiple Choice)

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Question 29

A plane is moving due north, directly towards its destination.Its airspeed is 200 mph.A constant breeze is blowing from west to east at 30 mph.At what rate is the plane moving north?

(Multiple Choice)

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Question 30

An object moves at a constant velocity of 11 m/s to the southwest for an interval of 20 s.Halfway through this interval, what is the magnitude of its instantaneous velocity?

(Multiple Choice)

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Question 31

A baseball leaves the bat with a speed of 44.0 m/s and an angle of 30.0 $\degree$ above the horizontal.A 5.0-m-high fence is located at a horizontal distance of 132 m from the point where the ball is struck.Assuming the ball leaves the bat 1.0 m above ground level, by how much does the ball clear the fence?

(Multiple Choice)

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Question 32

A stone is thrown with an initial speed of 15 m/s at an angle of 53 $\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s² and air resistance is negligible, what is the magnitude of the horizontal displacement of the rock?

(Multiple Choice)

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(40)

Question 33

A stone is thrown with an initial speed of 15 m/s at an angle of 53 $\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s²and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits the ground?

(Multiple Choice)

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(38)

Question 34

A bridge that was 5.0 m long has been washed out by the rain several days ago.How fast must a car be going to successfully jump the stream? Although the road is level on both sides of the bridge, the road on the far side is 2.0 m lower than the road on this side.

(Multiple Choice)

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Question 35

A jet airliner moving at 500 mph due east moves into a region where the wind is blowing at 120 mph in a direction 30.0 $\degree$ north of east.What is the new velocity and direction of the aircraft?

(Multiple Choice)

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Question 36

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20 $\degree$ above the horizontal.How long is he in the air before returning to Earth? (g = 9.8 m/s²)

(Multiple Choice)

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Question 37

A jogger runs halfway around a circular path with a radius of 60 m.What, respectively, are the magnitude of the displacement and the distance jogged?

(Multiple Choice)

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Question 38

A boat moves at 10.0 m/s relative to the water.If the boat is in a river where the current is 2.00 m/s, how long does it take the boat to make a complete round trip of 1 000 m upstream followed by a 1 000-m trip downstream?

(Multiple Choice)

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Question 39

The first displacement is 6 m and the second displacement is 3 m.They cannot add together to give a total displacement of:

(Multiple Choice)

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Question 40

Showing 21 - 40 of 71

Exam 3: Vectors and Two-Dimensional Motion

A stone is thrown with an initial speed of 15 m/s at an angle of 53 °\degree° above the horizontal from the top of a 35 m building.If g = 9.8 m/s2 and air resistance is negligible, then what is the speed of the rock as it hits the ground?

A taxicab moves five blocks due north, five blocks due east, and another two blocks due north.Assume all blocks are of equal size.What is the magnitude of the taxi's displacement, start to finish?

A runner circles a track of radius 100 m one time in 100 s at a constant rate.The greatest change in his velocity from his starting velocity:

A string attached to an airborne kite is maintained at an angle of 40 °\degree° with the horizontal.If a total of 120 m of string is reeled in while bringing the kite back to the ground, what is the horizontal displacement of the kite in the process? (Assume the kite string doesn't sag.)

The following force vectors act on an object: i) 50.0 newtons at 45.0 °\degree° north of east and ii) 25.0 newtons at 30.0 °\degree° south of east.Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction?

Which type of quantity is characterized by both magnitude and direction?

Vector is 3 m long and vector is 4 m long.The length of the sum of the vectors must be:

A fireman, 50.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 30.0 °\degree° above the horizontal.If the initial speed of the stream is 40.0 m/s, at what height will the stream of water strike the building?

A boat moves through the water in a river at a speed of 8 m/s relative to the water.The boat makes a trip downstream and then makes a return trip upstream to the original starting place.Which trip takes longer?

A plane is moving due north, directly towards its destination.Its airspeed is 200 mph.A constant breeze is blowing from west to east at 30 mph.At what rate is the plane moving north?

An object moves at a constant velocity of 11 m/s to the southwest for an interval of 20 s.Halfway through this interval, what is the magnitude of its instantaneous velocity?

A stone is thrown with an initial speed of 15 m/s at an angle of 53 °\degree° above the horizontal from the top of a 35 m building.If g = 9.8 m/s2 and air resistance is negligible, what is the magnitude of the horizontal displacement of the rock?

A stone is thrown with an initial speed of 15 m/s at an angle of 53 °\degree° above the horizontal from the top of a 35 m building.If g = 9.8 m/s2 and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits the ground?

A bridge that was 5.0 m long has been washed out by the rain several days ago.How fast must a car be going to successfully jump the stream? Although the road is level on both sides of the bridge, the road on the far side is 2.0 m lower than the road on this side.

A jet airliner moving at 500 mph due east moves into a region where the wind is blowing at 120 mph in a direction 30.0 °\degree° north of east.What is the new velocity and direction of the aircraft?

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20 °\degree° above the horizontal.How long is he in the air before returning to Earth? (g = 9.8 m/s2)

A jogger runs halfway around a circular path with a radius of 60 m.What, respectively, are the magnitude of the displacement and the distance jogged?

A boat moves at 10.0 m/s relative to the water.If the boat is in a river where the current is 2.00 m/s, how long does it take the boat to make a complete round trip of 1 000 m upstream followed by a 1 000-m trip downstream?

The first displacement is 6 m and the second displacement is 3 m.They cannot add together to give a total displacement of:

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A stone is thrown with an initial speed of 15 m/s at an angle of 53 $\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s²and air resistance is negligible, then what is the speed of the rock as it hits the ground?

A string attached to an airborne kite is maintained at an angle of 40 $\degree$ with the horizontal.If a total of 120 m of string is reeled in while bringing the kite back to the ground, what is the horizontal displacement of the kite in the process? (Assume the kite string doesn't sag.)

The following force vectors act on an object: i) 50.0 newtons at 45.0 $\degree$ north of east and ii) 25.0 newtons at 30.0 $\degree$ south of east.Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction?

A fireman, 50.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 30.0 $\degree$ above the horizontal.If the initial speed of the stream is 40.0 m/s, at what height will the stream of water strike the building?

A stone is thrown with an initial speed of 15 m/s at an angle of 53 $\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s² and air resistance is negligible, what is the magnitude of the horizontal displacement of the rock?

A stone is thrown with an initial speed of 15 m/s at an angle of 53 $\degree$ above the horizontal from the top of a 35 m building.If g = 9.8 m/s²and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits the ground?

A jet airliner moving at 500 mph due east moves into a region where the wind is blowing at 120 mph in a direction 30.0 $\degree$ north of east.What is the new velocity and direction of the aircraft?

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20 $\degree$ above the horizontal.How long is he in the air before returning to Earth? (g = 9.8 m/s²)