1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nataly [62]
3 years ago
11

An object moving forward at 10 m/s suddenly begins moving backward at 5 m/s. What is the most accurate explanation for this chan

ge?
a.The forces pushing the object forward became greater than the ones pushing the object back causing it to change direction.


b.The force pushing back on the object became greater than the force pushing the object forward.


c.The object was traveling in a straight line until it hit a brick wall and bounced backward.


d.The forces were ubalanced in the forward direction. Then they became balanced in the backward direction.
Physics
2 answers:
Vinil7 [7]3 years ago
8 0
My best guess would be C.
Nat2105 [25]3 years ago
6 0

Answer:

the correct answer is b

Explanation:

i took the test

You might be interested in
What would most likely cause the future acceleration of the expansion of the universe
irga5000 [103]

Answer:

never scared

that might help you

3 0
3 years ago
When was the first airplane made?
expeople1 [14]
The first ariplanr was made December 17, 1903
3 0
3 years ago
Read 2 more answers
A 0.200-m uniform bar has a mass of 0.795 kg and is released from rest in the vertical position, as the drawing indicates. The s
aleksklad [387]

Explanation:

Since, the rod is present in vertical position and the spring is unrestrained.

So, initial potential energy stored in the spring is U_{s} = 0

And, initial potential gravitational potential energy of the rod is U_{g} = \frac{mgL}{2}.

It is given that,

       mass of the bar = 0.795 kg

            g = 9.8 m/s^{2}

           L = length of the rod = 0.2 m

Initial total energy T = \frac{mgL}{2}

Now, when the rod is in horizontal position then final total energy will be as follows.

            T = \frac{1}{2}kx^{2} + I \omega^{2}

where,    I = moment of inertia of the rod about the end = \frac{mL^{2}}{3}

Also,    \omega = \frac{\nu}{L}

where,    \nu = speed of the tip of the rod

              x = spring extension

The initial unstrained length is x_{o} = 0.1 m

Therefore, final length will be calculated as follows.

              x' = \sqrt{(0.2)^{2} + (0.1)^{2}} m

Then,  x = x' - x_{o}

          x = \sqrt{(0.2)^{2} + (0.1)^{2}} m - 0.1 m

             = 0.1236 m

       k = 25 N/m

So, according to the law of conservation of energy

       \frac{mgL}{2} = \frac{1}{2}kx^{2} + \frac{1 \times mL^{2}}{2 \times 3}(\frac{\nu}{L})^{2}

      \frac{mgL}{2} = \frac{1}{2}kx^{2} + \frac{1}{6}mv^{2}

Putting the given values into the above formula as follows.

   \frac{mgL}{2} = \frac{1}{2}kx^{2} + \frac{1}{6}mv^{2}

  \frac{0.795 kg \times 9.8 \times 0.2 m}{2} = \frac{1}{2} \times 27 N/m \times (0.1236)^{2} + \frac{1}{6} \times 0.795 \times v^{2}

          v = 2.079 m/s

Thus, we can conclude that tangential speed with which end A strikes the horizontal surface is 2.079 m/s.

7 0
3 years ago
How many full length strands of hair are collected from the scalp to use as a sample?
laila [671]
50 strands is the standard procedure
4 0
3 years ago
if the time is taken to bring a ball to rest from a certain velocity 'v'. is reduced to half, what will be the change in the val
777dan777 [17]

The answer is C) rate of change of momentum. The answer is not initial or final momentum as the start and end points are not changing. On the other hand, the time it takes for the ball to change velocity is. This change relates to the change of momentum. Hope this helped :))

6 0
3 years ago
Other questions:
  • What distinguishes mass from weight? A. Mass is a measure of the amount of matter in an object, while weight is a measure of the
    6·2 answers
  • When Arti kicks a football, two forces interact. Arti's foot exerts a force on the ball. What exerts a force on Arti's foot?
    13·1 answer
  • The contents of the cylinder is then entirely transfered to a partially filled holding tank of volume 10,000 L originally at pre
    5·1 answer
  • The coloring of the blue morpho butterfly is protective. As the butterfly flaps its wings, the angle at which light strikes the
    11·1 answer
  • I need help!!!!!!!
    5·1 answer
  • Devon places sliced potatoes in a package of aluminum foil. He puts a metal grate over a campfire and sets the package on the gr
    11·2 answers
  • For the circuit shown, which of the following is true?
    5·2 answers
  • Which composition of water moves within a deep-water current?
    15·2 answers
  • The social decision scheme in which all members of a group must agree on a choice is known as __________.
    11·2 answers
  • ANSWER ASAP AND WILL GIVE BRAINLIEST AND POINTS
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!