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AURORKA [14]
3 years ago
15

What is meant by a quantity ? Mention any three system of unit that you know to measure a

Physics
1 answer:
d1i1m1o1n [39]3 years ago
4 0

<em> </em>

<em> the quantity which can be measured is called </em>

<em> the quantity which can be measured is called quantity for example length and mass time temperature </em>

<em> the quantity which can be measured is called quantity for example length and mass time temperature please brainlist </em>

<em> the quantity which can be measured is called quantity for example length and mass time temperature please brainlist </em>

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it took 3.5 hours for a train to travel the distance between two cities at a velocity of 120 miles per hour. How many miles lie
Art [367]

Given:

Time: 3.5 hrs

Velocity: 120 miles/hr

Now Distance=  Speed × Time

Now Velocity and speed have the same magnitude. Velocity being a vector quantity has a definite direction. Whereas speed is a scalar quantity,it indicates only the magnitude an doesn't define any direction.

Hence Distance = Velocity x time

Distance = 3.5 × 120 = 420 miles

7 0
3 years ago
Consider a situation where the acceleration of an object is always directed perpendicular to its velocity. This means that
Bond [772]

Answer:

this situation would not be physically possible

7 0
3 years ago
Kim took 5 hours to complete a journey with an average speed
monitta

Answer:110

Explanation:

6 0
3 years ago
Which of the following is true? A. If an equal force is applied to two objects, the object with greater mass will accelerate mor
docker41 [41]
B


I hope this helps and have a wonderful day filled with joy!!


<3
4 0
3 years ago
A speed skater moving across frictionless ice at 8.4 m/s hits a 5.7 m -wide patch of rough ice. She slows steadily, then continu
malfutka [58]

Answer:

Acceleration, a=-2.48\ m/s^2

Explanation:

Initial speed of the skater, u = 8.4 m/s

Final speed of the skater, v = 6.5 m/s

It hits a 5.7 m wide patch of rough ice, s = 5.7 m

We need to find the acceleration on the rough ice. The third equation of motion gives the relationship between the speed and the distance covered. Mathematically, it is given by :

v^2-u^2=2as

a=\dfrac{v^2-u^2}{2s}

a=\dfrac{(6.5)^2-(8.4)^2}{2\times 5.7}

a=-2.48\ m/s^2

So, the acceleration on the rough ice -2.48\ m/s^2 and negative sign shows deceleration.

8 0
3 years ago
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