phy newton's laws

An object has an acceleration of 12.0 m/s/s. The net force acting on the object is doubled while the mass of the object is held constant. What will be the new acceleration?

24.0 m/s/s

The force of gravity of objects on the moon is approximately one-sixth of their value on Earth. Joe weighs 600 N on earth. Joe's mass on the moon will be approximately _____.

60 kg

An elevator is moving to the upward and slowing down. Which one of the following statements correctly describes the forces acting upon the elevator?

Downward force(s) is(are) stronger than the upward force(s).

An object has an acceleration of 18.2 m/s/s. If the net force experienced by the object is decreased by a factor of 3.9, then the new acceleration would be ____ m/s/s. Enter a numerical answer.

Between 4.1 and 5.1

Which of the following would have the effect of increasing the acceleration of an object? Pick all that apply.

Doubling the net force experienced by the object. Halving the mass of the object. Decreasing the mass of the object.

A large crate is being pushed leftward across the floor at a constant velocity. Neglect air resistance. Correct Answer

Force due to gravity Normal Force Force of Friction Applied Force

For the following physical situation, identify the forces that are exerted upon the object. Pick all that apply.

Force of Friction Normal Force Force due to gravity

Which of the following can be explained using Newton's third law of motion?

It explains why every force is accompanied by a reaction force.

An object experiences a rightward force of 5 N, a leftward force of 3 N, an upward force of 10 N and a downward force of 10 N. Which one of the following conclusions can be made about the object's motion? Correct!

It will accelerate.

Consider the following situation: A sign is suspended by steel wires.

Tension force Force of gravity

Which of the following statements are true of free-falling objects of different mass? Pick all that apply.

The rate of acceleration is the same for all objects.

Which of the following statements are FALSE? List all that apply in alphabetical order with no spaces between letters.

The weight of an object on the moon will be the same as its weight on Earth. The mass and weight of an object are the same thing. The mass of an object is the force of gravity acting upon an object

If a moving object experiences an unbalanced force, then the object will have an acceleration that is in the same direction as the direction as the unbalanced force.

True

When compared to a less massive object, a more massive object will always _____.

have a greater tendency to resist changes in its state of motion

If you were in a spaceship and fired a cannonball into frictionless space, the amount of force needed to keep the cannonball in motion would be ____.

zero, since no force is necessary to keep an object moving

In the metric system, the mass of an object is expressed in _____ and the weight of an object is expressed in _____. Which two words fill in the blanks in their respective order?

kilograms, Newtons

The amount of matter or "stuff" in an object is referred to as the _____ of the object.

mass

The acceleration of a projectile has the greatest magnitude ____.

nonsense! A projectile's acceleration value is constant.

An object is moving along a level surface with a constant velocity. The net force acting upon the object is _____.

opposite the direction of motion

A linebacker strikes a fullback with full force in a football game. The reaction force to the force of the linebacker striking the fullback is ____.

the fullback applies a force to the linebacke

Which of the following is ALWAYS true of an object that is acted upon by an unbalanced force?

the object is accelerating.

Inertia refers to _____. Pick all that apply.

the tendency of moving objects to remain in motion the tendency of stationary objects to remain at rest