Physics- Topic 2/ Motion and Forces- circular motion

Question 1

What happens to velocity in a circular moving object

Answer 1

As the direction of the object is constantly changing so is the velocity

Question 2

What happens to speed in a circular moving object

Answer 2

The speed can be constant

Question 3

What happens to acceleration in a circular moving object

Answer 3

Due to the fact that acceleration = change in velocity/ time, as the velocity is always changing, the object is constantly accelerating.

Question 4

Centripetal force

Answer 4

Is the resultant force of an object acting in circular motion pointing to the centre of the movement

Question 5

When a ball is flung from orbit where does it travel

Answer 5

90 degrees to the to the radius. The same direction it was moving.

Question 6

How is the centripetal force affected mass?

Answer 6

Increased mass increases the resultant force because the weight is therefore larger and therefore the resultant force is bigger.

Question 7

How is the centripetal force affected speed?

Answer 7

With more speed the centripetal force increases

Question 8

How is the centripetal force affected radius?

Answer 8

The larger the radius, the smaller the centripetal force due to less tension.

Question 9

How inertial mass is the measurement of difficulty to change the velocity of an object.

Answer 9

M=f/a, with F being the resultant force, it shows how much the object will accelerate by. When force is doubled, so is acceleration. The mass shows the proportionality. With more mass in an object would need a greater force to be moved.