Force and weight

What unit do scientists use to measure force?

• Grams

• Newton

• Meters

• Joule

What is the net force on the box shown below?

• 30 N to the right

• 10 N to the left

• 60 N to the left

• 50 N to the right

When you slide a box across the floor, what force must your push be stronger than?

• Normal force

• Friction force

• Gravity

• Air resistance

The moon has a smaller gravity than the Earth. If you were to travel to the moon, your weight would …

• Increase

• Decrease

• Not change

• Vary with day and night

Which force pulls downward on objects?

• Normal force

• Friction force

• Gravity

• Air resistance

Your book is sitting at rest on your desk. Which of the following statements best describes this situation?

• There are no forces acting on your book

• Your book pushes on the desk

• The desk pushes on your book

• The forces acting on your book are balanced

When you walk across the ground and push on it with your feet, then …

• There is no effect on the ground

• The ground pushes back less stronger than your feet

• The ground pushes back more strongly than your feet

• The ground pushes back on your feet with equal force

What force is needed to accelerate 60 kg object at 2 m/s²?

(a)  

A force of 200 N pushes an object at 8 m/s². What is the mass of the object?

(a)  

A force is described as …

• A push only

• A pull only

• A push or a pull

• None of the above