Forces Quiz

What is kinematics?

• Kinematics is the study of motion.

• Kinematics is the study of the cause of motion.

• Kinematics is the study of dimensions.

• Kinematics is the study of atomic structures.

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NGSS.MS-PS2-2

Do two bodies have to be in physical contact to exert a force upon one another?

• No, the gravitational force is a field force and does not require physical contact to exert a force.

• No, the gravitational force is a contact force and does not require physical contact to exert a force.

• Yes, the gravitational force is a field force and requires physical contact to exert a force.

• Yes, the gravitational force is a contact force and requires physical contact to exert a force.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What kind of physical quantity is force?

• Force is a scalar quantity.

• Force is a vector quantity.

• Force is both a vector quantity and a scalar quantity.

• Force is neither a vector nor a scalar quantity.

Which forces can be represented in a free-body diagram?

• Internal forces

• External forces

• Both internal and external forces

• A body that is not influenced by any force

What does Newton’s first law state?

The unit of force is

• m/s

• m/s²

• Newtons

• kg

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Tags

NGSS.HS-PS2-1

According to Newton’s first law, a body in motion tends to remain in motion at a constant velocity. However, when you slide an object across a surface, the object eventually slows down and stops. Why?

• The object experiences a frictional force exerted by the surface, which opposes its motion.

• The object experiences the gravitational force exerted by Earth, which opposes its motion.

• The object experiences an internal force exerted by the body itself, which opposes its motion.

• The object experiences a pseudo-force from the body in motion, which opposes its motion.

Tags

NGSS.MS-PS3-5