Homework Practice

Printable assignment

Force Starter: Push, Pull and Friction

Section A: Force, Direction and Net Force

Question 1mcq

Force is a vector quantity because it has:

A.Only colour

B.Magnitude and direction

C.Only magnitude

D.Only direction

Question 2mcq

Two equal forces act in opposite directions on a box. The net force is:

A.Zero

B.Double one force

C.Always upward

D.Half one force

Question 3mcq

Balanced forces cause:

A.Always rotation

B.Always heating

C.Always acceleration

D.No change in state of motion

Question 4mcq

Unbalanced forces can:

A.Remove mass

B.Only keep rest forever

C.Change speed or direction

D.Make net force zero

Question 5mcq

A moving ball slows down on grass mainly because:

A.Gravity disappears

B.Friction acts opposite motion

C.Balanced forces increase speed

D.Mass becomes zero

Question 6mcq

If an object moves with constant velocity in a straight line, resultant force is:

A.Zero

B.Equal to mass

C.Equal to speed

D.Always positive

Section B: Friction in Daily Life

Question 7mcq

Friction generally acts:

A.In the same direction always

B.Only upward

C.Only in liquids

D.Opposite to relative motion

Question 8mcq

We can walk because friction between shoes and ground:

A.Removes gravity

B.Makes mass zero

C.Provides grip

D.Stops muscles

Question 9mcq

Oil is used in machines to:

A.Increase mass

B.Reduce friction

C.Remove force

D.Increase wear

Question 10mcq

Tyres have treads mainly to:

A.Increase grip with road

B.Make tyres transparent

C.Stop all motion

D.Remove weight

Question 11mcq

A book resting on a table has balanced forces because:

A.It has no mass

B.Only gravity acts

C.No forces act on it

D.Weight is balanced by normal reaction

Question 12mcq

A shopping cart speeds up when pushed harder because:

A.Mass disappears

B.Speed cannot change

C.Net force increases acceleration

D.Friction becomes gravity