Paper 2

Question 1

What is a scalar quantity?

Answer 1

A quantity that has only magnitude ie
Temperature, mass, Distance, speed

Question 2

What is a vector quantity?

Answer 2

A vector quantity is a quantity of both magnitude and direction ie Displacement, weight, acceleration, force

Question 3

What is a resultant force?

Answer 3

When several forces act on an object they could be replaced by a single force with the same result

Question 4

What is elastic deformation?

Answer 4

When an elastic object is stretched or compressed but returns to its original shape when the forces are removed

Question 5

What is inelastic deformation?

Answer 5

When an inelastic material changes shape after forces act on it

Question 6

How do you calculate Work Done?

Answer 6

Work done (J) = Force (N) x Distance (m)

Question 7

How do you calculate Force?

Answer 7

Force (N) = Spring Constant (N/m) c extension (m)

Question 8

What is Newton’s 1st law?

Answer 8

An object at rest remains at rest whilst an object in motion remains in motion at a constant speed without interference

Question 9

What is Newton’s 2nd Law?

Answer 9

Acceleration is directly proportional to the force applied

Question 10

What is Newton’s third law?

Answer 10

For every force or action there is an equal and opposite reaction