# Book M Ch 2 Modified

29 Questions  Settings  .

Related Topics
• 1.
Who was the scientist who gave us the Laws of Motion?
• A.

Bill Nye

• B.

Sir Isaac Newton

• 2.
How many Laws of Motion are there?
• A.

2

• B.

3

• 3.
What is another name for the first law of motion?
• A.

Law of inertia

• B.

Action/reaction

• 4.
Which law explains why we need to wear seatbelts?
• A.

1st

• B.

2nd

• 5.
Which law says that force is equal to mass times acceleration (Fnet=MA)?
• A.

1st

• B.

2nd

• 6.
Which law says that heavier objects require more force than lighter objects to move or accelerate?
• A.

3rd

• B.

2nd

• 7.
Which law explains how rockets are launched into space?
• A.

3rd

• B.

2nd

• 8.
Which law says for every action there is an equal but opposite reaction?
• A.

1st

• B.

3rd

• 9.
The speed an object reaches when the  force of gravity is balanced by the force of air resistance is called ____.
• A.

Acceleration

• B.

Terminal velocity

• 10.
You hit a wall with a stick.  The equal but opposite is
• A.

The wall pushes against you

• B.

The wall pushes against the stick

• 11.
The time for an action-reaction situation is
• A.

Instantaneous

• B.

At least 5 seconds

• 12.
Which type of friction slows down an object that slides?
• A.

Sliding

• B.

Rolling

• 13.
The force of ___ exists between any two objects that have mass.
• A.

Acceleration

• B.

Gravity

• 14.
The gravitational force of any object near Earth's surface ____
• A.

9.8 m/s squared

• B.

Depends on the objects mass

• 15.
If a net force acts at an angle to the direction an object is moving, the object will follow a(n) ____ path.
• A.

Curved

• B.

Straight

• 16.
A force is a push or a pull
• A.

True

• B.

False

• 17.
Rolling friction keeps an object at rest.
• A.

True

• B.

False

• 18.
Momentum is an unbalanced force that stops almost everything.
• A.

True

• B.

False

• 19.
A net force on an ovject changes the objects motion.
• A.

True

• B.

False

• 20.
A force in the opposite direction to the motion of the object will cause the object to speed up.
• A.

True

• B.

False

• 21.
If an object is at rest, all forces acting on that object must be balanced.
• A.

True

• B.

False

• 22.
Static friction enables you to ride a bike without skidding and falling.
• A.

True

• B.

False

• 23.
Applying the brakes uses sliding friction to slow the vehicle down.
• A.

True

• B.

False

• 24.
Normal force is the rubbing force that acts against the motion between two touching surfaces.
• A.

True

• B.

False

• 25.
If the forces acting on an object are unbalanced, the net force is not zero.
• A.

True

• B.

False

• 26.
The tendency of an object to remain at rest is called inertia.
• A.

True

• B.

False

• 27.
What is the force needed to accelerate a 200 kg object to 40 m/s squared? _____ N
• 28.
An object with a mass of 10 kg has a force exerted on it of 200 N. What is it's acceleration? ______ m/s squared.
• 29.
The density of an object that is 640 grams and 32cm3 is _____ g/cm3