Newton's Law of Motion

An object at rest will _______ if no outside forces are applied.

• Stay at rest
• Increase Velocity
• Decrease Mass

The SI units for force are...

• Kilograms
• Newtons
• Meters per second
• Pounds

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)

• The one with a mass of .78 kg will have the greatest acceleration.
• The one with a mass of .52 kg will have the greatest acceleration.
• They will both accelerate at the same rate.

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

If net force acting on object is 0, then the force is considered to be..

• Balanced
• Unbalanced
• Equal in Direction
• Distance/Time

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

A book is lying at rest on a table. The book will remain there at rest because

• there is a net force but the book has too much inertia

• there are no forces acting on it at all

• there is no net force on the book

• there is a net force, but the book is too heavy to move

It is more difficult to start a 50-kg box sliding across the floor than a 5-kg box because the 50-kg box has greater

• color

• speed

• inertia

• velocity

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more
• it doesn't move
• you get more inertia
• it decelerates