All categories

3 years ago

Which units are used to measure both velocity and speed?

2 answers:

5 0

(Any unit of distance)
divided by
(any unit of time)

becomes a unit of speed. Some favorites are mile/hour,
meter/second, and foot/second.

Speed is a part of velocity, so the same units are involved
in velocity. But velocity needs more than that.

When you have the distance and the time, you know the
speed completely ... there's no more to know about it.

But speed is only part of velocity. In addition to speed,
there's more to know in order to have a velocity. That's
the direction of the speed.

irina1246 [14]3 years ago

4 0

The SI unit for velocity and speed is meters per second

You might be interested in

Geologists apply various methods to study the layers of the Earth. Which of the following is NOT a method used to study the Eart

77julia77 [94]

Answer:

A. Scientists use seismic computer models to measure the atmospheric conditions above the Earth's crust

Explanation:

why would use atmosphere to study the layers of earth? dont think thats possible

8 0

3 years ago

How does a centripetal force cause circular motion

Aleksandr-060686 [28]

This acceleration is directed towards the center of thecircle. ... So for an object moving in a circle, there must be an inward force acting upon it in order tocause its inward acceleration. This is sometimes referred to as the centripetal force requirement.

8 0

3 years ago

Read 2 more answers

The amount of diffraction that occurs when a sound wave encounters a barrier depends on the wave’s

snow_lady [41]

The answer is ,

wavelength

7 0

4 years ago

Read 2 more answers

7) HELP ASAP PLZ PLZ HELP ME I don't know if I am right so if I am not right can you plz help me

CaHeK987 [17]

I believe that the answer is B

5 0

3 years ago

Read 2 more answers

A ball is gently dropped from a height of 30m. If its velocity increase uniform at the rate of 10m/s with what velocity will it

jekas [21]

Explanation:

The velocity of the ball with strikes the ground.
The time of the ball after which it strikes the ground.

$\red{\frak{Given}} \begin{cases} & \sf {A\ ball\ is\ gently\ dropped\ from\ a\ height\ of\ {\pmb{\sf{30\ m}}}.} \\ & \sf {Its\ velocity\ increase\ at\ the\ rate\ of\ {\pmb{\sf{10\ m/s^2}}}.} \end{cases}$

We know that,

The ball is dropped from the height of 30 m as stated in the question. Therefore, it will have a initial velocity of 0 m/s. The distance travelled by the ball will be 30 metres as the distance travelled by the ball is equal to the height of the tower and that is 30 metres.

So, by using the third equation of motion, we will find out the final velocity of the ball.

$\rule{200}{3}$

Therefore,

$\sf \dashrightarrow {2as\ =\ v^2\ -\ u^2} \\ \\ \\ \sf \dashrightarrow {2 \times 10\ m/s^2 \times 30\ m\ =\ v^2\ -\ (0\ m/s)^2} \\ \\ \\ \sf \dashrightarrow {v^2\ =\ 600\ m^2/s^2} \\ \\ \\ \sf \dashrightarrow {v\ =\ \sqrt{600\ m^2s^{-2}}} \\ \\ \\ \dashrightarrow {\underbrace{\boxed{\pink{\frak{Final\ velocity\ (v)\ =\ 24.49\ m/s \approx 24.5\ m/s}}}}_{\sf \blue{\tiny{Required\ velocity\ of\ ball}}}}$

∴ Hence, the required final velocity of the ball with which it strikes the ground is 24.5 m/s. Since, we know that the initial velocity of the ball is 0 m/s and the acceleration of the ball is 10 m/s². So, by using the first equation of motion, we will find out the time of the ball after which it stikes the ground.

$\rule{200}{3}$

Therefore,

$\sf \dashrightarrow {v\ =\ u\ +\ at} \\ \\ \\ \sf \dashrightarrow {t\ =\ \dfrac{v\ -\ u}{a}} \\ \\ \\ \sf \dashrightarrow {t\ =\ \dfrac{24.5\ m/s}{10\ m/s^2}} \\ \\ \\ \dashrightarrow {\underbrace{\boxed{\pink{\frak{Time\ (t)\ =\ 2.45\ s}}}}_{\sf \blue{\tiny{Required\ time}}}}$

∴ Hence, the required time of the ball after which it strikes the ground is 2.45 seconds.

3 0

3 years ago