What is happening between 4 and 5 seconds?

The object is speeding up in a negative direction.

The object is slowing down in a negative direction.

The object is slowing down in a positive direction.

The object is slowing down in a negative direction.

Fast to slow; Negative direction

Slow to fast; Negative direction

Fast to slow; Positive direction

Slow to fast; Positive direction

Describe the motion in segment C

Speeding up; Negative direction

Slowing down; Positive direction

Slowing down; Negative direction

Constant velocity; Negative direction

A person walking along a straight line moves such that her velocity as a function of time can be represented by the graph above. At what time does the person have the same position as she had at time t = 0?

During the interval 5 s < t < 8 s

A student conducts an investigation into the motion of a car that accelerates from rest on a straight, level roadway. A driver operating the car causes the car to speed up from rest at time t = 0 and the student makes measurements of the distance traveled and the speed of the car every second. What experimental evidence would support the conclusion that the car’s acceleration is uniform? Select two answers.

The distance fallen is proportional to the square of the falling time.

A graph of velocity vs. time is linear.

All objects released from rest at the same time fall together.

Objects speed up as they free-fall.

In section 5 of the velocity - time graph, the object is

slowing down moving in the negative direction

speeding up moving in the positive direction

slowing down moving in the positive direction

speeding up moving in the negative direction

The graph provided is a velocity vs. time graph for thing that can move and is indeed moving. Which of the following is true about the speed of the object during the time interval from 0 to 6 s.

It first decreases and then increases.

It increases during the entire interval.

It first increases and then decreases.

The position as a function of time for an object moving a straight line is shown in the graph. Which of the following best describes the object’s speed and direction of motion during the time internal shown?

Speed – Decreasing, Direction – Positive

Speed – Increasing, Direction – Positive

Speed – Decreasing, Direction - Negative

Speed – Increasing, Direction – Negative

Irma and Harvey start at one end of a street (the origin), run to the other end, then head back. On the way back Irma is ahead of Harvey. Which statement is correct about the distances run and the displacements from the origin?

Irma has run a greater distance, but her displacement is less than Harvey’s.

Irma has run a greater distance and her displacement is greater than Harvey’s.

Harvey has run a greater distance and his displacement is greater than Irma’s.

Harvey has run a shorter distance, and his displacement is less than Irma’s.

A person walking along a straight line moves such that her velocity as a function of time can be represented by the graph above. At what time does the person have the same position as she had at time t = 0?

During the interval 5 s < t < 8 s

At time t = 0, car X traveling with speed v 0 passes car Y which is just starting to move. Both cars then travel on two parallel lanes of the same straight road. The graphs of speed v versus time t for both cars are shown above. Which of the following is true at time t = 20 seconds?

Car X is accelerating faster than car Y.

A ball is tossed straight up and later returns to the point from which it was launched. If the ball is subject to air resistance as well as gravity, which of the following statements is correct?

The speed at which the ball returns to the point of launch is less than its speed when it was initially launched.

The net work done by air resistance on the ball during its flight is zero.

The time for the ball to fall is the same as the time for the ball to rise.

The force of air resistance is directed down-ward both when the ball is rising and when it is falling.

The net work done by gravity on the ball during its flight is greater than zero.

At time t = 0, car X traveling with speed v 0 passes car Y which is just starting to move. Both cars then travel on two parallel lanes of the same straight road. The graphs of speed v versus time t for both cars are shown above. W hich of the following is true at time t = 40 seconds?

Car X is accelerating faster than car Y.

AP Physics Unit 1 Extra Credit

Authored by Usman Khan

Physics

12th Grade

NGSS covered

Used 5+ times

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52 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The graph respresents

no motion

constant velocity

increasing velocity

decreasing velocity

At what time did runner A pass runner B?

0 seconds

1 second

2 seconds

3 seconds

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculate the acceleration for segment A.

2 m/s²

2 m/s

-2 m/s²

0 m/s²

At 60 seconds, how far had this object traveled?

0 m

10 m

20 m

40 m

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which graph represents zero acceleration (constant velocity)?

What is happening between 3 seconds and 4 seconds?

The object is moving in a negative direction.

The object is returning to its starting position.

The object is slowing to a stop.

The object is changing direction.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find the displacement in the first 5 seconds.

8 meters

4 meters

2 meters

5 meters

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AP Physics Unit 1 Extra Credit

The graph respresents

At what time did runner A pass runner B?

Calculate the acceleration for segment A.

At 60 seconds, how far had this object traveled?

Which graph represents zero acceleration (constant velocity)?

What is happening between 3 seconds and 4 seconds?

Find the displacement in the first 5 seconds.

What is happening between 4 and 5 seconds?

At 60 seconds, how far had this object traveled?

A train travels 6 meters in the first second of travel, 6 meters again during the second second of travel, 6 meters again during the third second. What's the train's acceleration ?

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