Physics Quiz 9 - Newton/Weight and Gravity

Weight is calculated by

• mass X gravity

• mass X velocity

• acceleration X velocity

What is mass?

• the amount of matter in an object

• how heavy an object is

• how fast an object falls

• how big an object is

What is gravity on Earth?

• 9.81 m/s^2

• 9 m/s^2

• 7 m/s^2

• 98 m/s^2

In physics, what unit is weight measured in?

• Newtons

• pounds

• meters

• kilograms

The weight of a girl with a mass of 40 kg is ___ N.

The weight of a cart with a mass of 150 kg is ___ N.

An astronaut weighing 588 N on earth notices that he weighs only 98 N on moon. His mass on moon is ___ kg.

• 60

• 50

• 100

• 58

What did Newton contribute to science? (Newton Mini Bio)

• Infinitesimal calculus

• A theory of optics and color

• Three laws of motion

• All of the above

What is the first law of motion, the law of inertia?

• Matter resists any change in motion

• The acceleration of an object depends on the force acting upon it and the object's mass

• For every action, there's an equal and opposite reaction

What is the second law of motion?

• Matter resists any change in motion

• The acceleration of an object depends on the force acting upon it and the object's mass

• For every action, there's an equal and opposite reaction