Forces Review (N 1st & 2nd Laws)

As mass increases (with force remaining the same), the acceleration of the object will

• increase

• decrease

• stay the same

• either increase or decrease depending on the object

Tags

NGSS.HS-PS2-1

What is the normal force acting on a 10 kg book sitting on a table when a person pushes down on the book with a force of 30N?

(a)  

Tags

NGSS.HS-PS2-1

An object that is on the moon will have less ____ than the same object on earth.

• weight

• mass

• mass and weight

A 25 N force is exerted to the West on an object at the same time a 10 N force to the North is exerted on the same object. What is the magnitude of the net force acting on the object?

• 15 N

• 29 N

• 35 N

• 27 N

• 30 N

Tags

NGSS.HS-PS2-1

What type of motion will occur if a constant net force is applied to an object?

• no motion

• constant velocity

• acceleration

• either constant velocity or acceleration

• either constant velocity or no motion

Tags

NGSS.HS-PS2-1

If an object has a net force of zero, the object is ....

• not moving

• accelerating

• moving at a constant velocity

• either at rest or a constant velocity

Tags

NGSS.HS-PS2-1

An object with a weight of 147 N on Earth will have a mass of

• 15 kg

• 1441 kg

• 25 kg

• 147 kg

• 11 kg

Tags

NGSS.HS-PS2-1

Which of the following are contact forces?

• normal force

• gravity

• magnetism

• friction

• more than 1 answer is correct

A 2000 kg car is moving at a constant velocity of 10 m/s. If the force of friction acting on the car is 5000N, what must the force of the engine be?

(a)  

Tags

NGSS.HS-PS2-1

John is moving a 2 kg box from rest to 10 m/s in 1.5 seconds with a constant acceleration. What is the magnitude of the net force on the box?

(a)  

Tags

NGSS.HS-PS2-1