A rocket,initially at rest,is fired vertically with an upward acceleration of 10 m/s2.At an altitude of 0.50 km,the engine of the rocket cuts off.What is the maximum altitude it achieves?

A) 1.9 km B) 1.3 km C) 1.6 km D) 1.0 km E) 2.1 km A) 1.9 km B) 1.3 km C) 1.6 km D) 1.0 km E) 2.1 km

A toy rocket,launched from the ground,rises vertically with an acceleration of 20 m/s2 for 6.0 s until its motor stops.Disregarding any air resistance,what maximum height above the ground will the rocket achieve?

A) 1.1 km B) 0.73 km C) 1.9 km D) 0.39 km E) 1.5 km A) 1.1 km B) 0.73 km C) 1.9 km D) 0.39 km E) 1.5 km

Exam 2: Motion in One Dimension

A ball is thrown vertically upward with an initial speed of 20 m/s.Two seconds later,a stone is thrown vertically (from the same initial height as the ball)with an initial speed of 24 m/s.At what height above the release point will the ball and stone pass each other?

(Multiple Choice)

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Question 41

A stone is thrown from the top of a building with an initial velocity of 20 m/s downward.The top of the building is 60 m above the ground.How much time elapses between the instant of release and the instant of impact with the ground?

(Multiple Choice)

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Question 42

An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m.What is the (constant)acceleration of the vehicle during this time?

(Multiple Choice)

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Question 43

An object moving on the x axis with a constant acceleration increases its x coordinate by 80 m in a time of 5.0 s and has a velocity of +20 m/s at the end of this time.Determine the acceleration of the object during this motion.

(Multiple Choice)

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Question 44

A rocket,initially at rest,is fired vertically with an upward acceleration of 10 m/s².At an altitude of 0.50 km,the engine of the rocket cuts off.What is the maximum altitude it achieves?

(Multiple Choice)

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Question 45

A particle is moving at constant velocity.Its position at t = 1.0 s is 3.0 m and its position at t = 4.0 s is 15.0 m.What is the slope of the position-time graph for this particle?

(Multiple Choice)

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Question 46

A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground.Determine the initial speed of the ball.

(Multiple Choice)

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Question 47

An object is thrown vertically upward such that it has a speed of 25 m/s when it reaches two thirds of its maximum height above the launch point.Determine this maximum height.

(Multiple Choice)

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Question 48

A particle moving along the x axis has a position given by x = (24t - 2.0t³)m,where t is measured in s.What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?

(Multiple Choice)

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Question 49

Two identical balls are at rest and side by side at the top of a hill.You let one ball,A,start rolling down the hill.A little later you start the second ball,B,down the hill by giving it a shove.The second ball rolls down the hill along a line parallel to the path of the first ball and passes it.At the instant ball B passes ball A:

(Multiple Choice)

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Question 50

Dallas says that any change in velocity is directly proportional to the time interval over which the change took place.Dana says that is true only when the acceleration is constant.Which one,if either,is correct?

(Multiple Choice)

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Question 51

A toy rocket,launched from the ground,rises vertically with an acceleration of 20 m/s² for 6.0 s until its motor stops.Disregarding any air resistance,what maximum height above the ground will the rocket achieve?

(Multiple Choice)

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Question 52

An electron,starting from rest and moving with a constant acceleration,travels 2.0 cm in 5.0 ms.What is the magnitude of this acceleration?

(Multiple Choice)

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Question 53

An object is thrown downward with an initial (t = 0)speed of 10 m/s from a height of 60 m above the ground.At the same instant (t = 0),a second object is propelled vertically upward from ground level with a speed of 40 m/s.At what height above the ground will the two objects pass each other?

(Multiple Choice)

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Question 54

A boy on a skate board skates off a horizontal bench at a velocity of 10 m/s.One tenth of a second after he leaves the bench,to two significant figures,the magnitudes of his velocity and acceleration are:

(Multiple Choice)

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Question 55

Showing 41 - 55 of 55

Exam 2: Motion in One Dimension

A ball is thrown vertically upward with an initial speed of 20 m/s.Two seconds later,a stone is thrown vertically (from the same initial height as the ball)with an initial speed of 24 m/s.At what height above the release point will the ball and stone pass each other?

A stone is thrown from the top of a building with an initial velocity of 20 m/s downward.The top of the building is 60 m above the ground.How much time elapses between the instant of release and the instant of impact with the ground?

An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m.What is the (constant)acceleration of the vehicle during this time?

An object moving on the x axis with a constant acceleration increases its x coordinate by 80 m in a time of 5.0 s and has a velocity of +20 m/s at the end of this time.Determine the acceleration of the object during this motion.

A rocket,initially at rest,is fired vertically with an upward acceleration of 10 m/s2.At an altitude of 0.50 km,the engine of the rocket cuts off.What is the maximum altitude it achieves?

A particle is moving at constant velocity.Its position at t = 1.0 s is 3.0 m and its position at t = 4.0 s is 15.0 m.What is the slope of the position-time graph for this particle?

A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground.Determine the initial speed of the ball.

An object is thrown vertically upward such that it has a speed of 25 m/s when it reaches two thirds of its maximum height above the launch point.Determine this maximum height.

A particle moving along the x axis has a position given by x = (24t - 2.0t3)m,where t is measured in s.What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?

Dallas says that any change in velocity is directly proportional to the time interval over which the change took place.Dana says that is true only when the acceleration is constant.Which one,if either,is correct?

A toy rocket,launched from the ground,rises vertically with an acceleration of 20 m/s2 for 6.0 s until its motor stops.Disregarding any air resistance,what maximum height above the ground will the rocket achieve?

An electron,starting from rest and moving with a constant acceleration,travels 2.0 cm in 5.0 ms.What is the magnitude of this acceleration?

An object is thrown downward with an initial (t = 0)speed of 10 m/s from a height of 60 m above the ground.At the same instant (t = 0),a second object is propelled vertically upward from ground level with a speed of 40 m/s.At what height above the ground will the two objects pass each other?

A boy on a skate board skates off a horizontal bench at a velocity of 10 m/s.One tenth of a second after he leaves the bench,to two significant figures,the magnitudes of his velocity and acceleration are:

Introduction and Vectors

Motion in Two Dimensions

The Laws of Motion

More Applications of Newtons Laws

Energy of a System

Conservation of Energy

Momentum and Collisions

Relativity

Rotational Motion

Gravity,planetary Orbits,and the Hydrogen Atom

Oscillatory Motion

Mechanical Waves

Superposition and Standing Waves

Fluid Mechanics

Temperature and the Kinetic Theory of Gases

Energy in Thermal Processes: the First Law of Thermodynamics

Heat Engines,entropy,and the Second Law of Thermodynamics

Electric Forces and Electric Fields

Electric Potential and Capacitance

Current and Direct Current Circuits

Magnetic Forces and Magnetic Fields

Faradays Law and Inductance

Electromagnetic Waves

Reflection and Refraction of Light

Image Formation by Mirrors and Lenses

Wave Optics

Quantum Physics

Atomic Physics

Nuclear Physics

Particle Physics

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A rocket,initially at rest,is fired vertically with an upward acceleration of 10 m/s².At an altitude of 0.50 km,the engine of the rocket cuts off.What is the maximum altitude it achieves?

A particle moving along the x axis has a position given by x = (24t - 2.0t³)m,where t is measured in s.What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?

A toy rocket,launched from the ground,rises vertically with an acceleration of 20 m/s² for 6.0 s until its motor stops.Disregarding any air resistance,what maximum height above the ground will the rocket achieve?