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2 years ago

Describe how acceleration and velocity are related and specify if these are scalar or vector quantities.

1 answer:

8 0

Acceleration is the rate of change of velocity. ... If an object is changing its velocity, i.e. changing its speed or changing its direction, then it is said to be accelerating. Acceleration =change in velocity/time
They are both vector quantities

You might be interested in

Describe what a high and low frequency electromagnetic wave look like:

Ghella [55]

A high electromagnetic wave has short, very fast, frequent waves.

a low electromagnetic wave has long, very slow, infrequent waves.

hope this helps! pls mark brainliest!

4 0

3 years ago

An object is observed for a time interval of 20 seconds. From time 6.7 s the object experiences a Force of 106 N that lasts unti

shusha [124]

Answer:

1654 kg m/s

Explanation:

The impulse experienced by an object is equal to the product between the force exerted on the object and the time during which the force lasts:

$I=F\Delta t$

where:

I is the impulse

F is the force exerted on the object

$\Delta t$ is the time during which the force is applied

For the object in this problem, we have

$F=106 N$ (force applied)

$\Delta t= 15.6 s$ (time interval)

Therefore, the impulse experienced by the object is:

$I=(106)(15.6)=1654 kg m/s$

3 0

3 years ago

Albert is piloting his spaceship, heading east with a speed of 0.92 cc relative to Earth. Albert's ship sends a light beam in th

ohaa [14]

Answer:

He sees the light as 1c

Explanation:

According to relativity, the speed of light is the same in all inertial frame of reference.

If we were to add the velocities as applicable to a normal moving bodies, the relative speed of the light beam will exceed c which will break relativistic law since nothing can go past the speed of light.

4 0

3 years ago

A bicycle has tires of radius 0.35 meters. If the bicycle is traveling at a constant speed of 7.8 m/s, at approximately what ang

lord [1]

22.3 rad/s

<h3>Further explanation</h3>

We will solve the question of uniform circular motion.

<u>Given:</u>

A bicycle has tires of radius $\boxed{ \ R = 0.35 \ meters \ }$
The bicycle is traveling at a constant speed of $\boxed{ \ v = 7.8 \ m/s \ }$

<u>Question:</u>

What angular speed are the tires rotating?

<u>The Process:</u>

Speed, angular speed, and radius are connected in the following formula:

$\boxed{\boxed{ \ v = \omega R \ }}$

The angular speed is worked out by

$\boxed{ \ \omega = \frac{v}{R} \ }$

All units are in the SI system so let us calculate the angular speed.

$\boxed{ \ \omega = \frac{7.8 \ m/s}{0.35 \ m} \ }$

Thus the value of the angular velocity of the rotating tire is $\boxed{\boxed{ \ \omega = 22.3 \ rad/s \ }}$

<u>An additional question:</u>

What is the frequency of tire rotation?

Recall this formula: $\boxed{ \ \omega = 2 \pi f \ } \rightarrow \boxed{ \ f = \frac{\omega}{2 \pi} \ }$

$\boxed{ \ f = \frac{22.3 \ rad/s}{2 \pi} \ }$

We get $\boxed{\boxed{ \ f = 3.55 \ Hz \ }}$

<h3>Learn more</h3>

Arc CD is ²/₃ of the circumference of a circle. What is the radian measure of the central angle? brainly.com/question/2115496
A triangle is rotated 90° about the origin brainly.com/question/2992432
Particle's speed and direction of motion brainly.com/question/2814900

Keywords: a bicycle has tires of radius 0.35 meters. traveling, at a constant speed of 7.8 m/s, at approximately, angular speed, the tires rotating

7 0

3 years ago

Who discovered the basic laws of planetary orbits?.

Phoenix [80]

Answer:

kepler

Explanation:

While Copernicus rightly observed that the planets revolve around the Sun, it was Kepler who correctly defined their orbits. At the age of 27, Kepler became the assistant of a wealthy astronomer, Tycho Brahe, who asked him to define the orbital mars

6 0

2 years ago