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4 years ago

How does acceleration differ from velocity

2 answers:

8 0

Any time that the sign (+ or -) of the acceleration is the same as the sign of the velocity, the object will speed up. If the signs are opposite, the object will slow down. Acceleration is a vector quantity. When either velocity or direction changes, there is acceleration (or deceleration).

pychu [463]4 years ago

8 0

Acceleration is the rate at which velocity changes,
and the direction in which it changes..

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For a solution to be a physical solution, it must satisfy several criteria. First, it must be continuous everywhere. Second, it

Zigmanuir [339]

Answer:

Explanation:

solution

5 0

3 years ago

What is the answer?

scoundrel [369]

"Choice-C" is the answer.

7 0

3 years ago

an athlete runs 5.4 laps around a circular track that is 400.0 m long. If this takes 540 s, what is the average velocity of the

Slav-nsk [51]

Answer:

Average velocity is 0.296 m/s.

Average speed is 4.0 m/s.

Explanation:

Given:

Distance of the circular track is, $D=400.0\ m$

Number of laps ran is, $n=5.4$

Time taken for the run is, $t=540\ s$

Now, total distance covered in 5.4 laps = $D_T=D\times n=400\times 5.4=2160\ m$

Also, since the path is a circle, the final position of the athlete after 5.4 laps will be 0.4 of 400 m ahead of the starting point.

Distance covered in 0.4 laps is, $\textrm{Displacemet}=0.4\times 400=160\ m$

Therefore, the displacement of the athlete will be 160 m as the athlete is 160 m ahead of the starting point and displacement depends on the initial and final points only.

Now, average velocity is given as:

$v_{avg}=\frac{\textrm{Displacemet}}{t}=\frac{160}{540}=0.296\ m/s$

Average speed is the ratio of total distance covered to total time taken.

So, average speed = $\frac{D_T}{t}=\frac{2160}{540}=4\ m/s$

6 0

4 years ago

1. What types of elements does an ionic bond occur between?

sweet [91]

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Explanation:

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4 years ago

A cannonball is launched from the ground with 48279 Joules of kinetic energy. How much gravitational potential energy will the c

Mamont248 [21]

When the cannonball is shot upwards, kinetic energy converts to gravitational potential energy (GPE).

As the ball rises, speed decreases and height increases.

So when the cannonball has reached its maximum height, all of the Kinetic energy has transferred into gravitational potential energy.

(Because at the max height, the cannonball for a brief moment has no velocity, and thus no kinetic energy)

So the GPE is 48279 Joules at it's maximum height.

6 0

4 years ago