Newton's 2nd Law

Question 1

Newton’s Second Law

Answer 1

Question 2

State Newton’s 2nd law

Answer 2

If a net force acts on an object, the object will accelerate in the direction of the net force. The acceleration is directly proportional to the net force and indirectly proportional to the mass of the object.

Question 3

Define acceleration

Answer 3

It is the rate of change of velocity of an object.

Question 4

What is the formula for acceleration?

Answer 4

Question 5

What is the formula for Newton’s 2nd Law?

Answer 5

Question 6

Define a newton.

Answer 6

The force that accelerates a mass of 1kg at 1m.s^-2 in the direction of the force.

Question 7

When is acceleration directly proportional to net force and what would that graph look like?

Answer 7

• When the net force increases and acceleration increases, provided mass remains constant
• When the net force decreases and acceleration decreases, provided mass remains constant

Question 8

When is acceleration inversely proportional to mass and what would that graph look like?

Answer 8

• When mass increases and acceleration decreases, provided force remains constant
• When the mass decreases and acceleration increases, provided force remains constant

Question 9

How is the net force acting on an object calculated?

Answer 9

It is the vector sum of all the forces acting on the object.

Question 10

For an object that is accelerating horizontally, which resultant force is used?

Answer 10

The resultant horizontal force

Question 11

For an object that is accelerating vertically, which resultant force is used?

Answer 11

The resultant vertical force

Question 12

For an object resting on a slope, which resultant force is used?

Answer 12

The resultant force is that which is parallel to the slope.

Question 13

Newton’s Second Law of Motion

Answer 13