Ap1 Exam 1 Kinematics

25 Questions | By Sfduke | Last updated: Apr 25, 2017 | Total Attempts: 117

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1.

The graph above shows the velocity versus time for an object moving in a straight line. For which time interval does the object move the greatest distance?
- A.
  
  A. 0 s and 1 s
- B.
  
  B. 1 s and 2 s
- C.
  
  C. 2 s and 3 s
- D.
  
  D. 3 s and 4 s
2.

The graph shows the velocity versus time for an object moving in a straight line. At what time after t = 0 s does the object again pass through its initial position?
- A.
  
  A. Between 0 s and 1 s
- B.
  
  B. Between 1 s and 2 s
- C.
  
  C. Between 2 s and 3 s
- D.
  
  D. Between 3 s and 4 s
3.

A small cart is placed on a ramp that is curved as shown. When released from rest, which of the following best represent what happens to the magnitude of the cart’s velocity and acceleration as it moves with negligible friction down the ramp?
- A.
  
  A. Increasing velocity and increasing acceleration
- B.
  
  B. Decreasing velocity and increasing acceleration
- C.
  
  C. Increasing velocity and decreasing acceleration
- D.
  
  D. Increasing velocity and constant acceleration
4.

A ball initially at rest is dropped from a height, y, above the floor, and it hits the floor after 1.5 s. From what height should the ball be dropped so that it takes 3.0 s to strike the floor?
- A.
  
  A. 0.7y
- B.
  
  B. 1.4y
- C.
  
  C. 2y
- D.
  
  D. 4y
5.

A truck traveled north for 400 m at 5 m/s and then it traveled east for 300 m at 4.3 m/s. The magnitude of the average velocity of the truck was most nearly
- A.
  
  A. 1.2 m/s
- B.
  
  B. 3.3 m/s
- C.
  
  C. 4.6 m/s
- D.
  
  D. 6.6 m/s D. 6.6 m/s
6.

A basketball is thrown toward a hoop with an initial velocity of V_o with a trajectory as shown. Consider air friction to be negligible. Point R is the highest point on the path. Points Q and S are the same height above the ground.Which of the following correctly ranks the speeds of the basketball at the four locations?
- A.
  
  A. vP
- B.
  
  B. vS
- C.
  
  C. vQ = vS
- D.
  
  D. vR
7.

A basketball is thrown toward a hoop with an initial velocity of V_o with a trajectory as shown. Consider air friction to be negligible. Point R is the highest point on the path. Points Q and S are the same height above the ground.Which of the following diagrams best shows the direction of the acceleration of the ball at point Q ?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
8.

Which of the following pairs of graphs best represents the vertical components of the velocity and acceleration, v and a, respectively, of the ball’s trajectory as functions of time t ?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
9.

The table shown represents the position of a laboratory cart at various instants in time as recorded by a motion detector. Which of the following best represents the velocity of the cart at time t = 0.5 s?
- A.
  
  A. 4 cm/s
- B.
  
  B. 7 cm/s
- C.
  
  C. 8 cm/s
- D.
  
  D. 28 cm/s
10.

A low friction cart is placed at the top of a ramp as shown. Upon release from rest, which of the following graphs best represents the velocity of the cart as a function of time?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
11.

A water balloon is launched from ground level toward a building. As the water balloon flies through the air, it strikes the second floor of the building after passing the peak of its trajectory. Disregarding any effects of air resistance and using the launch point as the origin and up as the positive (+) direction, which of the following shows the correct signs regarding the balloon’s vertical position, vertical velocity, and vertical acceleration the instant before it strikes the building?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
12.

A projectile is fired from the surface of Earth with a speed of 200 meters per second at an angle of 30°above the horizontal. If the ground is level, what is the maximum height reached by the projectile?
- A.
  
  A. 5 m
- B.
  
  B. 10 m
- C.
  
  C. 500 m
- D.
  
  D. 1000 m
13.

The graph provided shows the position, x, as a function of time, t. for a motorcycle moving in a straight line. Which of the following statements is the best description of the motion of the motorcycle?
- A.
  
  A. Slowing down, moving at a constant speed, then speeding up
- B.
  
  B. Speeding up, moving at a constant speed, then slowing down
- C.
  
  C. Moving with an increasing speed the entire time
- D.
  
  D. Climbing a steep hill and then reaching the top
14.

A body moving in the positive x direction passes the origin at time t = 0. Between t = 0 and t = 1 s, the body has a constant speed of 24 m/s. At t = 1 s, the body is given a constant acceleration of 6 m/s² in the negative x direction. The position x of the body at t = 11 s is
- A.
  
  A. –99 m
- B.
  
  B. –36 m
- C.
  
  C. 36 m
- D.
  
  D. 99 m
15.

A ball is shot into the air with a positive initial velocity as shown. Consider air resistance as negligible. Which of the following launch angles will cause the ball to remain in the air the longest time?
- A.
  
  A. 35°
- B.
  
  B. 45°
- C.
  
  C. 55°
- D.
  
  D. 65°
16.

An object slides off a roof 10 m above the ground with an initial horizontal speed of 5 m/s as shown. If air resistance is negligible, what is the velocity of the object the instant before impact with the ground?
- A.
  
  A. 5 m/s vertically and 5 m/s horizontally
- B.
  
  B. 5 m/s vertically and 19 m/s horizontally
- C.
  
  C. 14 m/s vertically and 19 m/s horizontally
- D.
  
  A. 14 m/s vertically and 5 m/s horizontally
17.

An object is dropped from rest from the top of a 400 m cliff on Earth. If air resistance is negligible, what is the distance the object travels during the first 6 s of its fall?
- A.
  
  A. 30 m
- B.
  
  B. 60 m
- C.
  
  C. 120 m
- D.
  
  D. 180 m
18.

The position of an object is given by the equationx = 3.0t² + 1.5t + 4.5where x is in meters and t is in seconds. What is the instantaneous acceleration of the object at t =3.0 s?
- A.
  
  A. 3.0 m/s^2
- B.
  
  B. 6.0 m/s^2
- C.
  
  C. 9.0 m/s^2
- D.
  
  D. 19.5 m/s^2
19.

A gazelle is standing still, when it notices a nearby lion. The gazelle accelerates uniformly in a straight line away from the lion. Which of the following pairs of graphs shows the distance traveled versus time and the speed versus time for the gazelle after it notices the lion?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
20.

A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. What is the magnitude of her horizontal displacement?
- A.
  
  A. 4.6 m
- B.
  
  B. 13 m
- C.
  
  C. 9.2 m
- D.
  
  D. 15 m
21.

In a coordinate system, the magnitude of the x component of a vector and q, the angle between the vector and x-axis, are known. The magnitude of the vector equals the x component
- A.
  
  A. divided by the cosine of theta.
- B.
  
  B. divided by the sine of theta.
- C.
  
  C. multiplied by the cosine of theta.
- D.
  
  D. multiplied by the sine of theta.
22.

A teacher has challenged a student to hit a target with a dart gun. The dart is launched from ground level and the target is placed one meter above the ground. For the first attempt, the student launches the dart at an angle of 45° but the dart goes too far. Which of the following options could the student pick to produce a more accurate second shot? Select two answers.CHOOSE TWO
- A.
  
  A. Increase the launch angle
- B.
  
  B. Decrease the launch angle
- C.
  
  C. Increase the launch height
- D.
  
  D. Decrease the target height
23.

The velocity vs. time graph for an elevator is shown. For the time interval 0 s to 4 s, which of the following best describes the motion of the elevator? Select two answers.
- A.
  
  A) The elevator moves upward with decreasing velocity.
- B.
  
  B) The elevator moves downward with increasing velocity.
- C.
  
  C) The elevator returns to its starting position.
- D.
  
  D) The elevator moves with constant acceleration.
24.

A student gives a cart a push up a ramp. The resulting position vs. time graph is displayed. At t = 1 second, which of the following are true? Select two answers.
- A.
  
  A. The displacement is zero.
- B.
  
  B. The velocity is zero.
- C.
  
  C. The acceleration is zero.
- D.
  
  D. The cart changes directions.
25.

A target T lies flat on the ground 3 m from the side of a building that is 10 m tall, as shown. A student rolls a ball off the horizontal roof of the building in the direction of the target, but misses. Consider air resistance as negligible. Which of the following can be determined from the information given? Select two answers.
- A.
  
  A. The speed of the ball as it strikes the ground
- B.
  
  B. The time the ball is in the air
- C.
  
  C. The acceleration of the ball 1 s before it strikes the ground
- D.
  
  D. The horizontal speed of the ball

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