Force, Tension, Acceleration

According to Newton's first law of motion, an object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an external force. This is also known as the law of ________.

• Momentum

• Inertia

• Friction

• Acceleration

Friction is a force that opposes the motion of objects that are in contact. True or False?

• Maybe

• False

• Sometimes

• True

What is the formula to calculate force?

• F = ma

• F = a/m

• F = m/a

• F = mv

Acceleration due to gravity on Earth is approximately ________ m/s^2.

• 10.05

• 8.91

• 9.81

• 7.62

When an object is suspended by a rope, the tension in the rope is equal to the ________ acting on the object.

• force of magnetism

• force of friction

• force of inertia

• force of gravity

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its ________.

• density

• volume

• speed

• mass

What is the SI unit of force?

• Kilogram

• Newton (N)

• Joule

• Meter

What is the formula to calculate acceleration?

• acceleration = (final velocity * initial velocity) / time

• acceleration = (final velocity - initial velocity) * time

• acceleration = (final velocity + initial velocity) / time

• acceleration = (final velocity - initial velocity) / time

When an object is in free fall, what is the only force acting on it?

• Magnetism

• Air resistance

• Friction

• Gravity

In a system of two objects connected by a rope, the tension in the rope is the same for both objects. True or False?

• Partially true

• False

• True

• Depends on the objects