Homework Practice

Printable assignment

Newton’s First and Second Law: Inertia to Acceleration

Section A: First Law and Inertia

Question 1mcq

Newton’s first law is also called the law of:

A.Conservation of energy

B.Inertia

C.Action-reaction

D.Acceleration only

Question 2mcq

An object at rest remains at rest unless:

A.An unbalanced force acts on it

B.Its colour changes

C.Time stops

D.Balanced forces act

Question 3mcq

Passengers lurch forward when a bus stops suddenly due to:

A.Inertia of rest only

B.Gravity reversing

C.Friction disappearing

D.Inertia of motion

Question 4mcq

Dust comes out when a carpet is beaten because dust tends to:

A.Become weightless

B.Accelerate upward automatically

C.Remain at rest

D.Change into gas

Question 5mcq

A heavier object usually has greater inertia because inertia depends on:

A.Colour

B.Mass

C.Temperature only

D.Shape only

Question 6mcq

Seat belts reduce injury mainly by:

A.Restraining the body during sudden stopping

B.Increasing inertia

C.Making car mass zero

D.Removing all force

Section B: Second Law and Force Calculations

Question 7mcq

Newton’s second law relates force to:

A.Only temperature

B.Only volume

C.Only colour

D.Mass and acceleration

Question 8mcq

A 5 kg object accelerates at

2\ m/s^2

. Force is:

7\ N

25\ N

10\ N

2.5\ N

Question 9mcq

One newton is the force that gives

1\ kg

mass an acceleration of:

9.8\ m/s^2

1\ m/s^2

1\ m

10\ m/s

Question 10mcq

If force is

24\ N

and mass is

6\ kg

, acceleration is:

4\ m/s^2

18\ m/s^2

30\ m/s^2

144\ m/s^2

Question 11mcq

For the same force, doubling mass makes acceleration:

A.Zero always

B.Four times

C.Double

D.Half

Question 12mcq

A change in velocity is evidence of:

A.Zero force always

B.Balanced force only

C.Acceleration due to unbalanced force

D.No motion