Newton's Laws of Motion

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: What is Newton's First Law of Motion?

An object at rest will stay at rest, and an object in motion will continue in motion

Every force has an equal and opposite reaction force

Angular momentum is conserved

None of these

A mass will accelerate in direct proportion to the net applied force

Question 2: A rocket accelerates into orbit. The thrust is explained by:

Newton's First Law of Motion

Newton's Conservation of Momentum

None of these

Newton's Third Law of Motion

Newton's Second Law of Motion

Question 3: The concept of momentum is covered by which law?

The Law of Angular Momentum

Newton's First Law of Motion

Newton's Second Law of Motion

Newton's Third Law of Motion

The Law of Momentum

Question 4: The speed of a bullet can be measured by the recoil (backwards force) of the rifle. Which law helps us to do this?

None of these

All of these

Newton's Second Law of Motion

Newton's Third Law of Motion

The Law of Conservation of Mass

Newton's First Law of Motion

Question 5: Isaac Newton invented which group of inventions?

calculus, the reflecting telescope, laws of mechanics, optics and gravity

a way to calculate apple velocities, the parachute, calculus

the steam engine, a telescope, mathematical laws

calculus, the refracting telescope, laws of mechanics, optics and gravity

Question 6: What is the symbol for momentum?

ρ

$E_m$

p

M

Question 7: What is 'apparent weight'?

The extra weight we think we have because we are accelerating

The mass of a lift x our mass

Gravity in a lift produces apparent weight

The force due to acceleration in a lift

Question 8: Why does Newton's Second Law of Motion use $F_{net}$ in the equation: $F_{net} = ma$?

Because it is not possible to add forces going in different directions

Force is a scalar value, so all forces are added together to make the net resultant force

$F_{net}$ is the total of all forces in the direction of motion

The resultant force is the sum of all forces (or net force), and this is what causes the acceleration

Question 9: Both elastic and inelastic collisions conserve momentum. But what do elastic collisions conserve that inelastic collisions do not?

Kinetic energy

Position to the starting point

Angular momentum

Potential energy

Question 10:

Which principle of Newton's First Law explains inertia?

Momentum is conserved

None of these

All of these

Objects at rest remain at rest

Inertia is energy which pushes the hammer head onto the handle

An object in motion will continue in motion unless a net force acts upon it