Week 1 AS- Newton's laws

Question 1

Scalar

Answer 1

A physical quantity that only has magnitude or size

Question 2

Vector

Answer 2

A physical quantity that has magnitude and direction.

Question 3

Resultant Force

Answer 3

Net force acting on an object.

Question 4

Equilibrium

Answer 4

An object is in equilibrium when the resultant force and resultant moment acting on it are both zero.

Question 5

Newton’s 1st Law

Answer 5

An object will remain stationary or continue to move at a constant velocity unless acted upon by a resultant force.

Question 6

Newton’s 2nd Law

Answer 6

The rate of change of momentum is directly proportional to the resultant force acting on the object and acts in the same direction as the resultant force.

Question 7

Newton’s 3rd Law

Answer 7

If body A exerts a force on body B, the B will exert a force on body A that is equal in magnitude, opposite in direction, and collinear.

Question 8

Equation for speed

Answer 8

V = d/t

Question 9

Equation of Motion 1

Answer 9

a = (v - u)/t

Question 10

Equation of motion 2

Answer 10

S = 1/2 (u + v) t

Question 11

Equation of Motion 3

Answer 11

s = ut + 1/2 (at^2)

Question 12

Equation of Motion 4

Answer 12

v^2 = u^2 + 2as