The acceleration of an object as a function of time is given by a(t)= (3.00 m/s3)t,where t is in seconds.If the object is at rest at time t = 0.00 s,what is the velocity of the object at time t = 6.00 s?

A) 18.0 m/s B) 54.0 m/s C) 0.00 m/s D) 15.0 m/s E) 108 m/s A) 18.0 m/s B) 54.0 m/s C) 0.00 m/s D) 15.0 m/s E) 108 m/s

An airplane that is flying level needs to accelerate from a speed of 2.00 × 102 m/s to a speed of while it flies a distance of 1.20 km.What must be the acceleration of the plane?

A) 4.44 m/s2 B) 2.45 m/s2 C) 7.33 m/s2 D) 5.78 m/s2 E) 1.34 m/s2 A) 4.44 m/s2 B) 2.45 m/s2 C) 7.33 m/s2 D) 5.78 m/s2 E) 1.34 m/s2

Exam 2: Kinematics in One Dimension

The graph in the figure shows the position of an object as a function of time.The letters H-L represent particular moments of time.At which moments shown (H,I,etc.)is the speed of the object (a)the greatest? (b)the smallest?

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Question 1

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(a)J (b)I

The figure shows the position of an object as a function of time,with all numbers accurate to two significant figures.Between time and time (a)what is the average speed of the object? (b)what is the average velocity of the object?

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Question 2

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(a)0.56 m/s (b)0.11 m/s

The acceleration of an object as a function of time is given by a(t)= (3.00 m/s³)t,where t is in seconds.If the object has a velocity 1.00 m/s at time what is the displacement of the object between time t = 2.00 s and time t = 4.00 s?

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Question 3

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The motion of a particle is described in the velocity versus time graph shown in the figure.We can say that its speed

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Question 4

An object starts its motion with a constant velocity of 2.0 m/s toward the east.After 3.0 s,the object stops for 1.0 s.The object then moves toward the west a distance of 2.0 m in 3.0 s.The object continues traveling in the same direction,but increases its speed by 1.0 m/s for the next 2.0 s.Which graph below could represent the motion of this object?

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Question 5

A cat runs along a straight line (the x-axis)from point A to point B to point C,as shown in the figure.The distance between points A and C is 5.00 m,the distance between points B and C is 10.0 m,and the positive direction of the x-axis points to the right.The time to run from A to B is 20.0 s,and the time from B to C is 8.00 s.As the cat runs along the x-axis between points A and C (a)what is the magnitude of its average velocity? (b)what is its average speed?

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Question 6

Two identical objects A and B fall from rest from different heights to the ground and feel no appreciable air resistance.If object B takes TWICE as long as object A to reach the ground,what is the ratio of the heights from which A and B fell?

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Question 7

If an object is accelerating toward a point,then it must be getting closer and closer to that point.

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Question 8

A car accelerates from to at a rate of How far does the car travel while accelerating?

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Question 9

A dragster starts from rest and travels 1/4 mi in 6.70 s with constant acceleration.What is its velocity when it crosses the finish line?

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Question 10

The figure shows the position of an object as a function of time.During the time interval from time and time (a)what is the length of the path the object followed? (b)what is the displacement of the object?

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Question 11

Suppose that an object is moving with constant nonzero acceleration.Which of the following is an accurate statement concerning its motion?

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Question 12

The acceleration of an object as a function of time is given by a(t)= (3.00 m/s³)t,where t is in seconds.If the object is at rest at time t = 0.00 s,what is the velocity of the object at time t = 6.00 s?

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Question 13

Two identical stones are dropped from rest and feel no air resistance as they fall.Stone A is dropped from height h,and stone B is dropped from height 2h.If stone A takes time t to reach the ground,stone B will take time

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Question 14

An airplane that is flying level needs to accelerate from a speed of 2.00 × 10² m/s to a speed of while it flies a distance of 1.20 km.What must be the acceleration of the plane?

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Question 15

When can we be certain that the average velocity of an object is always equal to its instantaneous velocity?

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Question 16

A ball rolls across a floor with an acceleration of 0.100 m/s² in a direction opposite to its velocity.The ball has a velocity of 4.00 m/s after rolling a distance 6.00 m across the floor.What was the initial speed of the ball?

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Question 17

A car is 200 m from a stop sign and traveling toward the sign at 40.0 m/s.At this time,the driver suddenly realizes that she must stop the car.If it takes 0.200 s for the driver to apply the brakes,what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign?

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Question 18

An object starts from rest at time t = 0.00 s and moves in the +x direction with constant acceleration.The object travels 12.0 m from time t = 1.00 s to time t = 2.00 s.What is the acceleration of the object?

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Question 19

Two objects are thrown from the top of a tall building and experience no appreciable air resistance.One is thrown up,and the other is thrown down,both with the same initial speed.What are their speeds when they hit the street?

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Question 20

Showing 1 - 20 of 59

Exam 2: Kinematics in One Dimension

The graph in the figure shows the position of an object as a function of time.The letters H-L represent particular moments of time.At which moments shown (H,I,etc.)is the speed of the object (a)the greatest? (b)the smallest?

The figure shows the position of an object as a function of time,with all numbers accurate to two significant figures.Between time and time (a)what is the average speed of the object? (b)what is the average velocity of the object?

The acceleration of an object as a function of time is given by a(t)= (3.00 m/s3)t,where t is in seconds.If the object has a velocity 1.00 m/s at time what is the displacement of the object between time t = 2.00 s and time t = 4.00 s?

The motion of a particle is described in the velocity versus time graph shown in the figure.We can say that its speed

Two identical objects A and B fall from rest from different heights to the ground and feel no appreciable air resistance.If object B takes TWICE as long as object A to reach the ground,what is the ratio of the heights from which A and B fell?

If an object is accelerating toward a point,then it must be getting closer and closer to that point.

A car accelerates from to at a rate of How far does the car travel while accelerating?

A dragster starts from rest and travels 1/4 mi in 6.70 s with constant acceleration.What is its velocity when it crosses the finish line?

The figure shows the position of an object as a function of time.During the time interval from time and time (a)what is the length of the path the object followed? (b)what is the displacement of the object?

Suppose that an object is moving with constant nonzero acceleration.Which of the following is an accurate statement concerning its motion?

The acceleration of an object as a function of time is given by a(t)= (3.00 m/s3)t,where t is in seconds.If the object is at rest at time t = 0.00 s,what is the velocity of the object at time t = 6.00 s?

Two identical stones are dropped from rest and feel no air resistance as they fall.Stone A is dropped from height h,and stone B is dropped from height 2h.If stone A takes time t to reach the ground,stone B will take time

An airplane that is flying level needs to accelerate from a speed of 2.00 × 102 m/s to a speed of while it flies a distance of 1.20 km.What must be the acceleration of the plane?

When can we be certain that the average velocity of an object is always equal to its instantaneous velocity?

A ball rolls across a floor with an acceleration of 0.100 m/s2 in a direction opposite to its velocity.The ball has a velocity of 4.00 m/s after rolling a distance 6.00 m across the floor.What was the initial speed of the ball?

An object starts from rest at time t = 0.00 s and moves in the +x direction with constant acceleration.The object travels 12.0 m from time t = 1.00 s to time t = 2.00 s.What is the acceleration of the object?

Two objects are thrown from the top of a tall building and experience no appreciable air resistance.One is thrown up,and the other is thrown down,both with the same initial speed.What are their speeds when they hit the street?

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The acceleration of an object as a function of time is given by a(t)= (3.00 m/s³)t,where t is in seconds.If the object has a velocity 1.00 m/s at time what is the displacement of the object between time t = 2.00 s and time t = 4.00 s?

The acceleration of an object as a function of time is given by a(t)= (3.00 m/s³)t,where t is in seconds.If the object is at rest at time t = 0.00 s,what is the velocity of the object at time t = 6.00 s?

An airplane that is flying level needs to accelerate from a speed of 2.00 × 10² m/s to a speed of while it flies a distance of 1.20 km.What must be the acceleration of the plane?

A ball rolls across a floor with an acceleration of 0.100 m/s² in a direction opposite to its velocity.The ball has a velocity of 4.00 m/s after rolling a distance 6.00 m across the floor.What was the initial speed of the ball?