Your shopping cart has mass of 65 kg. In order of accelerate the shopping cart down an aisle at 0.3 m/sec^2, what force would you need to use or apply to the cart?

Here a cat is running at constant speed which is given as 10 km/h for  5s

So here the average speed is defined as total distance moved in total time interval

so here it is given by

since

here speed of cat is constant so it will remain the same

And hence the average speed and instantaneous speed at any instant for this duration will remain the same

so here answer would be

average speed = 10 km/h

instantaneous speed = 10 km/h

Answer:

At center of ruler.

Explanation:

The center of gravity is defined as the point at which the object can be balanced. Due to different structure, weight and size, center of gravity changes from object to object.

In this case we have a plastic ruler which has a homogeneous structure, that means its weight is equally distributed through out. So its center of gravity must be at a point which is at equal distance from the both ends ( center ).

The answer would defiantly be option D "Nicolaus Copernicus." Copernicus was first to purpose the model of the universe, back in 1543 he presented a heliocentric model of the universe, he also made a geocentric model.

Hope this helps!

Nonportrit

Answer:

Option (D)

Explanation:

Heliocentric model was discovered by the great scientist Nicolaus Copernicus.

According to the Heliocentrism theory, the sun is believed to be located at the center of our solar system and earth along with other planets revolves around it in a circular path.

There were certain limitation of this theory. This theory was unable to describe why the stars most of the time exist to be at the same place, inspite of the frequently changing positions of earth as it revolves around the sun.

Thus, the correct answer is option (D).