S2 Forces

How do you calculate pressure

• P = F/A

• P = FA

• F = P/A

• F = PA

What is work done?

• force per unit area

• force which causes an object to stay still in a different direction than the force

• force which causes an object to move a distance in a different direction than the force

• force which causes an object to move a distance in a same direction than the force

What is the SI unit of pressure? (more than 1 ans)

• J (joules)

• Pa (pascal)

• N (newton)

• N/m2 (newton per metre square)

What is the SI unit of force?

• J (joules)

• Pa (pascal)

• N (newton)

• W (watt)

What is the SI unit of energy?

• J (joules)

• Pa (pascal)

• N (newton)

• W (watt)

What is the difference between mass and weight?

• Mass changes, weight changes differently

• Mass is constant, weight changes depending on gravitational field strength

• Mass changes, weight is constant

• Mass and weight is constant

How do you calculate weight

• W = m/g

• m = Wg

• W = mg

• W = mg^2

How do you calculate work done?

• Wd = f x d

• Wd = f/d

• W = d/f

• Wd = f / A

What are different sources of energy? (more than 1 answer)

• Non- renewable sources (fossil fuels, natural gas)

• Non- renewable sources (plastic)

• Renewable sources (paper, metal)

• Renewable sources (solar, biofuels, hydroelectric)

What are the different forces? (more than 1 ans)

• Contact (magnetic, gravitational)

• Non-contact (magnetic, gravitational)

• Contact (frictional force)

• Non-contact (frictional force)