Physics Practice 01/09/20

Which of these are balanced forces?

• Michael running a marathon at a constant speed

• A spaceship going a constant speed toward the next galaxy

• A cup of water sitting on the nightstand

• A train slowly coming to a stop

Which of these are balanced forces?

• Someone not moving at all

• A fork in a drawer

• A plane landing

• A bird sitting on a branch

Which of these are unbalanced forces?

• Turning a corner

• Speeding up to catch a green light

• A can rolling down a ramp

• Flying at a constant speed of 60 km/h

Which of these are unbalanced forces?

• Going from 0 mph to 60 mph

• Traveling uphill on your bicycle

• Slowing down

• A cat sleeping on a chair

Which of these are balanced forces?

• A Cart going constant speed

• A person standing

• A phone placed on the table

• A person running

Which of these is Acceleration?

• Turning a corner

• Slowing down

• Running faster

• Jogging at constant speed

Which of these tells us Speed?

• Running 40 yards in 40 seconds.

• Sprinting 100m in 1 minute.

• Running but slowing down because you're tired

• Jogging 2m per second north

Which of these are Velocity

• 5 mph, west

• from 5mph to 10 mph

• 10 mph, south

• 15 m in 3 seconds, east

Calculate the net force shown in the diagram? Balanced or unbalanced?

• 15 N left

• 7 N left

• 7 N Right

• Balanced

• Unbalanced

Calculate the net force shown in the diagram?

• Balanced

• 50 N

• 0 N

• Unbalanced