which is a contact force

• friction

• gravity

• electrostatic

• magnetic

what does a spring balance measure?

• force

• weight

• mass

• pressure

what is the force exerted by theh earth to pull the object towards it self known as?

• electrostatic force

• muscular force

• contact force

• gravitational force

what is the SI unit of force?

• newton

• dyne

• pound

• gram

which force is responsible for keeping planets in orbit?

• friction

• gravity

• electrostatic

• magnetic

what is the formula to calculate pressure?

• P = F/A

• P = F*d

• P = F/m

• P = F*v

what is the SI unit of pressure?

• pascal

• newton

• dyne

• pound

which force is responsible for the buoyancy of an object in a fluid?

• friction

• gravity

• buoyant force

• magnetic

what is the formula to calculate work?

• W = F*d*cos(theta)

• W = F*d

• W = F/A

• W = F*v

what is the SI unit of energy?

• joule

• erg

• calorie

• kilowatt-hour