3.5 Newtons Laws Of Motion

Question 1

Newtons first

Answer 1

A body will remain at rest or continue to move at a constant velocity until an external force acts on it

Question 2

Newtons second

Answer 2

Resultant force on an object is proportional to the rate of change of momentum of the object, and the momentum change takes place in the direction of the force

Question 3

Newtons third

Answer 3

If object a exerts a force on object b, object b will exert an equal and opposite force on object a

Question 4

What is needed for Newton’s third law?

Answer 4

Forces must be of the same type
Must be acting in opposite directions
On different objects

Question 5

Momentum equitation

Answer 5

Mass x velocity

Question 6

What is the principle of conservation of momentum?

Answer 6

The total momentum before a collision is always equal to the total momentum after the collision, provided that no external forces are involved

Question 7

Define impulse

Answer 7

The forces of a force and time time for which it acts

Question 8

What is impulse the same as?

Answer 8

Change in momentum

Question 9

what is the area beneath a force time graph?

Answer 9

Impulse

Question 10

Define force

Answer 10

Rate of change of momentum