Motion And Momentum Laws

Question 1

What is newton’s 1st law?

Answer 1

An object will continue to move with constant velocity or remain at rest unless a resultant force acts upon it.

Question 2

What is Newton’s second law of motion?

Answer 2

The rate of change of momentum is directly proportional to the force acting on an object

Question 3

What is Newton’s 3rd law of motion?

Answer 3

If object A exerts a force on object B, object B will exert an equal and opposite reaction force on object A, where both forces are of the same type and are along the same line.

Question 4

What is the unit for momentum?

Answer 4

Kgms^-1

Question 5

What is the unit for impulse?

Answer 5

Ns

Question 6

What’s the equation for momentum (use the generally accepted symbols)

Answer 6

P = mv

Question 7

What is the law of the conservation of momentum?

Answer 7

Momentum is conserved in any collision provided that no external force acts on the objects.