Forces - 9A|E

What is the equation for force?

• F = m x a

• F = m/a

• F = a/m

Which of the following are contact forces?

• Magnetic

• Applied

• Frictional

What type of force is seen here?

(a)  

Which force acts between the protons and neutrons ?

• Magnetic

• Nuclear

• Electric

How much friction would you estimate is there?

• 0 N

• 10 N

Which of the following statements is false?

• Weight is a vector quantity

• Weight is measured in newtons (N)

• The weight of an object is the same on the Earth and the moon

What is the relationship between weight and mass?

• Weight is directly proportional to mass

• Weight is inversely proportional to mass

• Weight is not proportional to mass

What is the weight of a 40 kg dog on Earth?

• 4 N

• 40 N

• 400 N

If the mass of a body is M on the earth's surface, what is the mass of the same body on the moon's surface?

• M

• M6

• Zero

If a rock is brought from the surface of the moon:

• its mass will change

• its weight will change but not mass.

• both mass and weight will change.

• its mass and weight both will remain the same.