MS PS Ch.10 Forces

Friction acts in a direction _____ to the direction of an object’s motion.

• Unrelated
• Opposite
• Equal
• Perpendicular

Unless an object at rest is acted upon by a force, it stays at rest due to its

• Matter
• Inertia
• Friction
• Gravity

A 10-kg ball is accelerated 500 m/s2 by a force of

• 5000N
• 50N
• 500N
• .50N

The momentum of a 1500-kg car traveling at a velocity of 10 m/s is

• 15,000N
• 15m/s2
• 150N
• 15,000kg*m/s

A(n) _________ can cause an object’s motion to change.

• Unbalanced force
• Balanced force
• Weight
• Inertia

The amount of matter in an object is called its

• Weight
• Force
• Inertia
• Mass

Newton’s second law of motion states the relationship of mass, acceleration, and force.  It says that

• Force equals mass divided by accleration
• Force equals acceleration divided by mass
• Acceleration equals force divided by mass
• Every object attracts every other object in the universe

A(n) ____ causes objects to move in a circle.

• Centripetal force
• Large weight
• Terminal velocity
• Acceleration

The unit of force, a Newton, is equal to

• The amount of mass in an object
• Mass X Velocity
• kg * m/s
• kg *m/s2

An object in free fall, _____ until it reaches terminal velocity

• Decreases in mass
• Slows down
• Accelerates
• Is balanced