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3 years ago

I NEED HELP ON THIS QUESTION!

Physics

2 answers:

GarryVolchara [31]3 years ago

4 0

Forward because things that are in motion stay in motion.

Hope that helped!

~Izzy

san4es73 [151]3 years ago

4 0

Your answer is

B.) Forward

because of the sudden halt, this tends to make everything bounce forward, and then to a stop in the orignal position, or in the groceries case, forward a few feet.

Hope this Helps! :)

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A charged particle decelerates as it moves from location a to location b. if va = 160 v and vb = 100 v, what is the sign of the

skelet666 [1.2K]

The sign of the charged particle is positively charged.

<h3>What is potential difference?</h3>

When a single charge is transported in an electric field, work is done by the potential difference (also known as electrical potential).
There is potential energy stored in this charge that could flow when work is done on it.
Voltage is the possibility of a single charge flowing. The need to flow increases with voltage.
Here, voltage can be the potential differences.

The potential difference between the 2 points determines the movement of that particle. An electron moves from lower to higher potential which is negatively charged, and a positively charged particle moves from higher to lower potential.

Now, since the particle is moving from a point A having 160 v potential to point B having 100 v potential that is it is moving from higher potential to a lower potential therefore the particle will be a positively charged one.

Learn more about potential difference,

brainly.com/question/23716417

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3 0

1 year ago

- A cannon of 2000 kg fires a shell of 10 kg at

fgiga [73]

1) -0.5 m/s

We can solve the first part of the problem by using the law of conservation of momentum. In fact, the total momentum of the cannon - shell system must be conserved.

Before the shot, both the cannon and the shell are at rest, so the total momentum is zero:

$p=0$

After the shot, the momentum is:

$p=MV+mv$

where

M = 2000 kg is the mass of the cannon

m = 10 kg is the mass of the shell

v = 100 m/s is the velocity of the shell (we take as positive the direction of motion of the shell)

V = ? is the velocity of the cannon

Since momentum is conserved, we can write

$0=MV+mv$

And solving for V, we find the velocity of the cannon:

$V=-\frac{mv}{M}=-\frac{(10)(100)}{2000}=-0.5 m/s$

where the negative sign indicates that the cannon moves in the direction opposite to the shell.

2) 0.5 m

The motion of the cannon is a uniformly accelerated motion, so we can solve this part by using suvat equation:

$v^2-u^2=2as$

where

v is the final velocity of the cannon

u = 0.5 m/s is the initial velocity of the cannon (now we take as positive the initial direction of motion of the cannon)

$a=-0.25 m/s^2$ is the deceleration of the cannon

s is the distance travelled by the cannon

The cannon will stop when v = 0; substituting and solving the equation for s, we find the minimum safe distance required to stop the cannon:

$s=\frac{v^2-u^2}{2a}=\frac{0-0.5^2}{2(-0.25)}=0.5 m$

7 0

4 years ago

When you're super tired and you lose energy, what energy are you actually losing?

DIA [1.3K]

Answer:

it is chemical energy

Explanation:

that is the energy used by our body, so it is the one that we will loose. and the energy that we gain is also chemical energy

6 0

3 years ago

Read 2 more answers

Billy and Bob want to know if the amount of baking soda added to vinegar will affect the height a rocket will launch. They will

Tatiana [17]

Answer:

hypothesis: Billy and Bob want to know if the amount of baking soda added to vinegar will affect the height a rocket will launch. They will measure the height of the rocket launch in meters

Explanation:

6 0

3 years ago

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Consider a air-filled parallel-plate capacitor with plates of length 8 cm, width 5.52 cm, spaced a distance 1.99 cm apart. Now i

prohojiy [21]

Answer:

The ratio of the new potential energy to the potential energy before the insertion of the dielectric is 0.58

Explanation:

Given that,

Length of plates = 8 cm

Width = 5.52 cm