Forces Test

What is a force?

• A way to measure speed

• A push or pull on an object

• The light generated by a wave

• Mass in motion

Which of the following equations provides a balanced force?

• Fnet = 1 + 2 + 4 + 7 = 14

• Fnet = 4 + 6 + 8 - 18 = 0

• Fnet = 1 + 3 + 5 +7 = 16

• Fnet = 2 + 4 - 6 - 8 = -8

Which of the following equations provides an unbalanced force?

• Fnet = 1 + 2 + 4 - 7 = 0

• Fnet = 4 + 6 + 8 - 18 = 0

• Fnet = 1 + 3 + 5 +7 = 16

• Fnet = 2 - 4 + 6 - 4 = 0

What is net force?

• The sum force on an object

• The average force on an object

• A force that is resisting an object that is moving

• A force that resists an object that is falling

Which of the following is a force that resists motion between moving objects?

• Friction

• Net Force

• Static Electricity

• Gravity

Which is one of the two types of friction?

• Kinetic

• Elastic

• Emotive

• Standing

What is kinetic friction?

• Friction that keeps objects from moving

• Friction that resists moving objects

• Friction that keeps things from falling

• Friction that generates light

What is static friction?

• Friction that keeps objects from moving

• Friction that resists moving objects

• Friction that keeps things from falling

• Friction that generates light

What does the universal law of gravitation state?

• All particles are attracted to each other

• All particles repel each other

• All particles are made of atoms

• Some particles do not experience gravity

A meteor is passing by a comet. The meteor has a mass of 2,265,000 kg while the comet has a mass of 1,789,000 kg. If they are 1000 km apart, what is the force of gravity on these objects?

G = 6.674*10^-11

F = G*m1*m2/d^2