Newton's Second Law of Motion

Fill in the blank: According to Newton's First Law of Motion, an object at rest will stay at _____, and an object in motion will stay in _____ unless an unbalanced force acts on the object.

• rest; motion

• motion; rest

• rest; rest

• motion; motion

When forces on an object combine and form a net force that is equal to zero, what happens to the motion of the object?

• The object speeds up

• The object slows down

• There is no change in the motion of the object

• The object changes direction

In the example shown, the force of the ground pushing upward on the ball is F1 = 10 N, and the force of gravity pulling downward on the ball is F2 = 10 N. What is the net force acting on the ball?

• 0 N

• 5 N upward

• 20 N downward

• 10 N upward

If the net force on an object is zero, the object will experience no change in its motion.

• True

• False

Newton's Second Law of Motion states that the ______ of an object is equal to the net force acting on the object divided by the object's mass.

• acceleration

• velocity

• momentum

• displacement

What is the formula for acceleration according to Newton's Second Law of Motion?

• a = F + m

• a = F / m

• a = m / F

• a = F - m

In the formula a = F / m, what does 'F' stand for?

• Force of friction

• Net force

• Final velocity

• Mass

In the formula a = F / m, what does 'm' represent?

• mass

• momentum

• meter

• motion

In the formula a = F / m, what does 'a' represent?

• acceleration

• force

• mass

• velocity

According to the information provided, what happens in a directly proportional relationship?

• When one variable increases, the other variable decreases.

• When one variable increases, the other variable also increases.

• When one variable decreases, the other variable stays the same.

• When one variable increases, the other variable disappears.