A car is at position x1, y1) = 4 m, 5 m) at time t1 = 1 s. If 10 seconds later the car moving in a straight line is at position x2, y2) = 204 m, 305 m), calculate the distance traveled by the car in this interval.

A) 367 m B) 500 m C) 373 m D) 509 m E) 361 m A) 367 m B) 500 m C) 373 m D) 509 m E) 361 m

Exam 3: Motion in Two and Three Dimensions

A car is traveling east at 50 km/h. It rounds a curve, and 5 s later it is traveling north at 50 km/h. The magnitude of the average acceleration of the car is

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Question 21

A car going around a curve of radius R at a speed V experiences a centripetal acceleration a_c. What is its acceleration if it goes around a curve of radius 3R at a speed of 2V?

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Question 22

The figure represents the parabolic trajectory of a ball going from a to e in Earth gravity but without air resistance. The initial velocity of the ball is V_o at an angle $\theta$ to the horizon. The vertical dashed lines represent equal time interval, $\Delta$ t. $The figure represents the parabolic trajectory of a ball going from a to e in Earth gravity but without air resistance. The initial velocity of the ball is V<sub>o</sub> at an angle \theta to the horizon. The vertical dashed lines represent equal time interval, \Delta t. The acceleration at point a is the acceleration at c.$ The acceleration at point a is the acceleration at c.

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Question 23

A projectile is fired with an initial speed of 1000 m/s at an angle of 37° above the horizontal. If air resistance is neglected, the horizontal component of the projectile's velocity after 20 s is approximately

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Question 24

Three vectors and are added together. Which statement below best describes the additive property of the three vectors?

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Question 25

Which of the following is NOT a vector?

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Question 26

A car is at position x₁, y₁) = 4 m, 5 m) at time t₁ = 1 s. If 10 seconds later the car moving in a straight line is at position x₂, y₂) = 204 m, 305 m), calculate the distance traveled by the car in this interval.

(Multiple Choice)

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Question 27

If an object is moving toward west, its acceleration

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Question 28

A rescue airplane is diving at an angle of 37º below the horizontal with a speed of 250 m/s. It releases a survival package when it is at an altitude of 600 m. If air resistance is ignored, the horizontal distance of the point of impact from the plane at the moment of the package's release is

(Multiple Choice)

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Question 29

The velocity vector of an object is given by and 4 s later, its velocity vector is . The units are in m/s. The angle that the change in the velocity vector makes with respect to the positive x-axis is given by

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Question 30

An object traveling in a circle at constant speed

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Question 31

The vector in the figure below that could represent the vector is

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Question 32

A vector of magnitude 5 points in the +y direction. Another vector of magnitude 4 is added to the first vector. The largest possible magnitude of the sum is

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Question 33

A plane is flying horizontally at a height of 500 m and a constant speed of 429 km/h when an object is projected vertically downward at an initial speed of 35.0 m/s. If air resistance is neglected, the average vertical component of velocity between the object's release and its striking the ground is

(Multiple Choice)

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Question 34

The vector in the figure below that could represent the vector is

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Question 35

Two vector quantities, whose directions can be altered at will, can have a resultant between the limits 5 and 15. The magnitudes of these two vector quantities could be

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Question 36

What is the least number of non-zero vectors that can be added to give a resultant equal to zero?

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Question 37

A particle has an initial velocity of 4.8 m/s toward the south and a final velocity of 7.1 m/s toward the east. The particle was subject to a constant acceleration for 0.25 s. The magnitude and the direction of the acceleration must have been

(Multiple Choice)

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Question 38

The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. At point C the velocity of the ball is

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Question 39

The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. What is the direction of the acceleration at point C?

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Question 40

Showing 21 - 40 of 94

Exam 3: Motion in Two and Three Dimensions

A car is traveling east at 50 km/h. It rounds a curve, and 5 s later it is traveling north at 50 km/h. The magnitude of the average acceleration of the car is

A car going around a curve of radius R at a speed V experiences a centripetal acceleration ac. What is its acceleration if it goes around a curve of radius 3R at a speed of 2V?

A projectile is fired with an initial speed of 1000 m/s at an angle of 37° above the horizontal. If air resistance is neglected, the horizontal component of the projectile's velocity after 20 s is approximately

Three vectors and are added together. Which statement below best describes the additive property of the three vectors?

Which of the following is NOT a vector?

A car is at position x1, y1) = 4 m, 5 m) at time t1 = 1 s. If 10 seconds later the car moving in a straight line is at position x2, y2) = 204 m, 305 m), calculate the distance traveled by the car in this interval.

If an object is moving toward west, its acceleration

A rescue airplane is diving at an angle of 37º below the horizontal with a speed of 250 m/s. It releases a survival package when it is at an altitude of 600 m. If air resistance is ignored, the horizontal distance of the point of impact from the plane at the moment of the package's release is

The velocity vector of an object is given by and 4 s later, its velocity vector is . The units are in m/s. The angle that the change in the velocity vector makes with respect to the positive x-axis is given by

An object traveling in a circle at constant speed

The vector in the figure below that could represent the vector is

A vector of magnitude 5 points in the +y direction. Another vector of magnitude 4 is added to the first vector. The largest possible magnitude of the sum is

The vector in the figure below that could represent the vector is

Two vector quantities, whose directions can be altered at will, can have a resultant between the limits 5 and 15. The magnitudes of these two vector quantities could be

What is the least number of non-zero vectors that can be added to give a resultant equal to zero?

A particle has an initial velocity of 4.8 m/s toward the south and a final velocity of 7.1 m/s toward the east. The particle was subject to a constant acceleration for 0.25 s. The magnitude and the direction of the acceleration must have been

The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. At point C the velocity of the ball is

The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. What is the direction of the acceleration at point C?

Introduction to Physics

Linear Motion

Forces and Motion I: Newtons Laws

Forces and Motion II: Applications

Work and Energy

Momentum, Collisions, and the Center of Mass

Rotational Motion

Elastic Properties of Matter: Stress and Strain

Gravitation

Fluids

Oscillations

Waves

Thermodynamics I

Thermodynamics II

Electrostatics I: Electric Charge, Forces, and Fields

Electrostatics II: Electric Potential Energy and Electric Potential

Electric Charges in Motion

Magnetism

Electromagnetic Induction

Alternating-Current Circuits

Electromagnetic Waves

Wave Properties of Light

Geometrical Optics

Relativity

Quantum Physics and Atomic Structure

Nuclear Physics

Particle Physics

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A car going around a curve of radius R at a speed V experiences a centripetal acceleration a_c. What is its acceleration if it goes around a curve of radius 3R at a speed of 2V?

A car is at position x₁, y₁) = 4 m, 5 m) at time t₁ = 1 s. If 10 seconds later the car moving in a straight line is at position x₂, y₂) = 204 m, 305 m), calculate the distance traveled by the car in this interval.