Newton's Laws Review

Which of the following is the cause of an acceleration?

• speed

• inertia

• force

• velocity

Which of the following is the tendency of an object to maintain its state of motion?

• acceleration

• inertia

• force

• velocity

A car goes forward along a level road at constant velocity. The additional force needed to bring the car into equilibrium is

• greater than the normal force times the coefficient of static friction.

• equal to the normal force times the coefficient of static friction.

• the normal force times the coefficient of kinetic friction.

• zero.

A hockey stick hits a puck on the ice. Identify an action-reaction pair in this situation.

• The stick exerts a force on the puck; the puck exerts a force on the stick.

• The stick exerts a force on the puck; the puck exerts a force on the ice.

• The puck exerts a force on the stick; the stick exerts a force on the ice.

• The stick exerts a force on the ice; the ice exerts a force on the puck.

According to Newton's second law, when the same force is applied to two objects of different masses,

• the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration.

• the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration.

• the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration.

• the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

What happens to an object in motion when it experiences a nonzero net external force?

• The object experiences an acceleration.

• The acceleration of the object is zero.

• The velocity of the object does not change.

• None of these are correct.

If two teams playing tug-of-war pull on a rope with equal but opposite forces, what is the net external force on the rope?

• nonzero

• zero

Distinguish between mass and weight. Select all that apply.

• There is no difference, are exactly the same.

• Mass is the amount of matter in an object. Weight is the magnitude of the force due to gravity acting on the object.

• Weight depends on the gravitational force, while mass is an inherent property of the object and does not depend on the gravitational force.

• Mass varies whether on the moon or on Earth.

A 9301.9 N net force is exerted on a 5458.6 N object. What is the object's acceleration?

• 1.7 m/s²

• 16.7 m/s²

• 0.06 m/s²

• 0.59 m/s²

What is the mass of an object that weigh's 7016.8 N on earth?

• 716 kg

• 716 N

• 7016.8 N

• 7016.8 kg