Forces & Newton's Laws

Front

Back

5N

Answer explanation

8N-3N = 5N to the right

Front

________ is the force that opposes the sliding motion between two touching surfaces.

Back

Friction

Front

Can a force cause an object at rest to move or accelerate an object that is already moving?

Back

True

Front

What law is best described by inertia? Options: 1st, 2nd, 3rd

Back

1st

Front

Two forces are applied to a 2.0-kilogram block on a frictionless, horizontal surface. What is the acceleration of the block?

Back

3.0 m/s² to the right

Front

A 50kg cart will accelerate at 4 m/s² when pushed with a force of 200N. This relationship demonstrates which of Newton's Laws of Motion?

Back

Newton's 2nd Law of Motion

Front

A person not wearing a seatbelt flies through a car window when someone slams on the brakes because the person’s body wants to remain in continuous motion even when the car stops.

Back

Newton's 1st Law

Front

An object will accelerate in some direction only if _________________.
Options:
- a balanced force acts on it.
- an unbalanced force acts on it.
- The object’s weight is increased.
- The object has reached terminal velocity.

Back

an unbalanced force acts on it

Front

For an object to be in equilibrium (balanced), the forces acting upon it must be:
- in one direction, only.
- equal in magnitude and opposite in direction.
- both balanced and unbalanced.
- equal in magnitude and identical in direction.

Back

equal in magnitude and opposite in direction.

Front

An inflated balloon released from rest moves horizontally. The law that best explains this event is: Newton's 1st Law, Newton's 2nd Law, Newton's 3rd Law, Law of Gravity

Back

Newton's 3rd Law