Physical Science

So, please check my answers here:

1. Which example identifies a change in motion that produces acceleration?
A) A speed skater moving at a constant speed on a straight track**
B) A ball moving at constant speed around a circular track
C) A particle moving in a vacuum at constant velocity
D) A vehicle moving down the street at a steady speed

2. Objects in free fall near the surface of Earth experience
A) Constant speed
B) Constant velocity
C) Constant acceleration**
D) Constant distance

3. Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration?
A) 2 m/s^2
B) 5 m/s^2
C) 4 m/s^2
D) 3 m/s^2**

4. The slope of a speed-time graph indicates
A) Direction
B) Acceleration**
C) Velocity
D) Speed

5. A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's acceleration be described?
A) The train's acceleration is positive
B) The train is not accelerating
C) The train will come to rest in 6 minutes
D) The train's acceleration is negative**

6. What is a good definition of acceleration?
A) How fast a speed is changing at a specific instant**
B) How fast a velocity is changing at a specific instant
C) How fast a direction is changing at a specific instant
D) Each of the above

Are my answers correct? If not, let me know which ones aren't and I'll fix them. (✿◠‿◠)

  1. 👍
  2. 👎
  3. 👁
  1. Half are wrong. 1,3,6

    1. 👍
    2. 👎
  2. answers?

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    1) Which of the following is true about photosynthesis? A. It is an exothermic reaction B.It is a endothermic reaction ***** C.It produces carbon dioxide D. It occurs in animals 2) Atomic Theory is A.Subject to change if new

  2. Science

    1.)The sporophyte generation produces spores that grow into a A.)Gametophyte B.)Gymnosperm C.)Angiosperm D.)Pupa 2.)Placental mammals develop A.)In leg an egg laid in water B.)In a pouch on the mother's body C.)Inside the mother's

  3. Language Arts

    Which sentence describes a function of dialogue in a story?(1 point) A. It identifies the genre of the work without the author stating it directly. B. It is used to identify the titles of other stories. C. It moves the plot

  4. Science

    Which of the following produces the energy, initial motion, and direction of the surface currents in the oceans? A. Coriolis Effect B. density. C. continental barriers D. prevailing winds

  1. science

    1. What is the magnitude of a force? the motion of the force the motion of the force A. the motion of the force B. the amount of force C. the type of force D. the direction of the force 2. Two people push a box from opposite

  2. Science

    FORCES THAT CHANGE MOTION QUICK CHECK 1.What is a newton? ANSWER: The unit in which force is measured 2.A tennis player swings and hits the ball away. How does the force of the tennis racket affect the motion of the ball? ANSWER:

  3. biology

    Which statements accurately describe the electron transport chain? Select all that apply. a: It produces carbon dioxide. b: It produces oxygen. c: It produces water and a high amount of ATP. d: It uses electrons released from NADH

  4. digital arts

    1.figures are only the objects that are standing still in animation. A. true B. false*** 2.the animation in zoetrope could A. tell a story B. be projected on a wall C. not be in more than three colors D. give a simple figure the

  1. AP Physics

    A jet plane is flying at a constant altitude. At time t1 = 0, it has components of velocity vx = 88 m/s, vy = 115 m/s. At time t2 = 30s, the components are vx = -175 m/s, vy = 35 m/s. a) Sketch the velocity vectors at t1 and t2.

  2. Math

    I need to check my answers for Lesson 5: Adding and Subtracting fractions mid unit review so if anyone has something so I can check my answers that would be nice. Thank you.

  3. Science 8 - Check Answers

    Please Check Answers. 4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion * B. magnetic C. gravitational D. electromagnet 5. An experiment discovered that a particular material was a poor

  4. physics

    A clown is rocking on a rocking chair in the dark. His glowing red nose moves back and forth a distance of 0.42m exactly 30 times a minute in a simple harmonic motion. (a) what is the amplitude of this motion? (b) what is the

You can view more similar questions or ask a new question.