Force Problems

According to Newton's ______ of motion, an object at rest will remain at rest and an object in motion will continue moving at a constant velocity unless acted upon by an external force.

• First Law

• Second Law

• Third Law

Which of Newton's laws states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass?

• Newton's third law.

• Newton's first law.

• Newton's law of universal gravitation.

• Newton's second law

Tags

NGSS.MS-PS2-2

A 5 kg object is subjected to a net force of 10 N. What is the acceleration of the object?

• 5 m/s^2

• 20 m/s^2

• 2 m/s^2

• 50 m/s^2

Tags

NGSS.MS-PS2-2

What is the weight of a 50 kg object on Earth? (Acceleration due to gravity on Earth is approximately 9.8 m/s^2)

• 550 N

• 450 N

• 490 N

• 500 N

Tags

NGSS.MS-PS2-4

A 2 kg object is hanging from a rope. What is the tension in the rope if the object is at rest?

• 2 N

• 9.8 N

• 25 N

• 19.6 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A 10 kg object is sliding down an inclined plane with an angle of 30 degrees. What is the component of the object's weight parallel to the incline?

• 49 N

• 10 N

• 5 N

• 20 N

A 20 kg object is pushed with a force of 50 N along a horizontal surface. If the coefficient of friction between the object and the surface is 0.3, what is the frictional force acting on the object?

• 45 N

• 30 N

• 15 N

• 58.8 N

Tags

NGSS.MS-PS2-2

A 1000 kg car is traveling at a constant velocity of 20 m/s. What is the net force acting on the car?

• 1000 N

• 10 N

• 0 N

• 200 N

Tags

NGSS.MS-PS2-2

A 5 kg object is pushed with a force of 20 N. If the object experiences a frictional force of 10 N, what is the acceleration of the object?

• 8 m/s^2

• 6 m/s^2

• 4 m/s^2

• 2 m/s^2

Tags

NGSS.MS-PS2-2

A 2 kg object is hanging from a rope. What is the tension in the rope if the object is accelerating upwards with an acceleration of 5 m/s^2?

• 15 N

• 20 N

• 10 N

• 29.6 N

Tags

NGSS.MS-PS2-2