Three forces given by vectors $2 \hat{i} + 2 \hat{j}$,$2 \hat{i} - 2 \hat{j}$,and $-4 \hat{i}$ are acting together on a point object at rest. The object moves along the direction:

Newton's first law of motion describes the following:

Passengers standing in a bus are thrown outwards when the bus takes a sudden turn. This happens because of

$STATEMENT-1$: $A$ cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table. Because
$STATEMENT-2$: For every action there is an equal and opposite reaction.

$A$ person driving a car suddenly applies the brakes on seeing a child on the road ahead. If he is not wearing a seat belt,he falls forward and hits his head against the steering wheel. Why?

$A$ mass of $2\, kg$ is suspended from a rigid support by a thread $AB$. Another thread $CD$ of the same type is attached to the lower end of the $2\, kg$ mass. If the lower thread $CD$ is pulled with a sudden jerk,what happens?