2.20-2.26 Newtons 3rd Law+Momentum

Question 1

Describe the speed of an object that is moving in a circular orbit

Answer 1

travelling at a constant velocity

Question 2

What result force must be needed in order for an object to travel in a circle?

Answer 2

Centripetal force

Question 3

In which direction does centripetal force act?

Answer 3

.Centre of the circle

Question 4

What is inertial mass a measure of?

Answer 4

How difficult it is to change the velocity of an object

Question 5

How is inertial mass defined?

Answer 5

Ratio of force over acceleration

Question 6

What is Newton’s third law?

Answer 6

Every action force has an equal and opposite reaction force

Question 7

Describe how Newton’s third law is used in collisions

Answer 7

If two objects collide the same force is exerted on both objects

Question 8

Define momentum

Answer 8

.The tendency of an object to keep moving in the same direction

Question 9

If two marbles collided when would the two marbles have momentum?

Answer 9

.They will both have momentum before and after the collision