Dist, disp
Velocity/ speed, momentum
Acceleration
Forces
Units/vocab
100

You walk 15m up the hallway then turn around and walk 6m back to your locker. Finally, you walk the 8m to your classroom. What is the distance?

29m

100

What is the difference between speed and velocity?

Speed tells you how fast an object is moving. Velocity gives you the speed and a direction.

100

What is the equation for acceleration?

a= (vf - vi)/t

100
What is the difference between balanced and unbalanced forces?

Balanced forces are balanced out so that there is a net force of zero. 

Unbalanced forces have a net force greater than zero.

100

What units do we use to measure distance, velocity, and acceleration? 

(three different units)

m, m/s, m/s2

200

You go for a run, first running north for 1600m, then turning around and running south for 700m. What is your displacement?

900m

200

A bird travels 6 meters in 1.5 seconds. What is its speed (with units)?

4 m/s

200
A biker was stopped but then accelerated to 10 m/s in 4s. What was his acceleration?

2.5 m/s2

200

If a group of people are pushing a car down a street with a force of 250N, and the rolling friction exerted on the car by the street is 70N. What is the net force?

180N

200

What is centripetal force?

Centripetal force is a force directed towards the center of a circle/curve. It keeps an object on a circular track.

300
The block where you live is a perfect square. If each side of your block is 14m and you walk completely around your block twice, what is your distance?

112m

300

A 6kg ball is rolling down a hill with a velocity of 7m/s. What is its momentum?

42 kg* m/s

300

A runner is sprinting at 3 m/s and then comes to a stop 8 seconds later. What was her acceleration?

0.375 m/s2

300

If your weight (the force you exert on the earth) is 800N, what is the normal force the ground is exerting back on you?

800N

300

What is a Newton equal to? (other units)

N= kg*m/s2

400

A car drives down the interstate for 45 miles. Unfortunately, the driver missed the exit and then had to turn around and drive for 21 miles. What is the displacement and distance of the car?

Distance: 66 miles

Displacement: 24 miles

400

A basketball player running down the court has a momentum of 127.5 kg*m/s. If the basketball player is running at a velocity of 1.5m/s, what is his mass?

85kg

400

If an object is rounding a curve and its speed is not changing, is it experiencing acceleration? Why or why not?

Its direction is changing--therefore its velocity is changing. This means its experiencing acceleration (centripetal acceleration).

400
The net force experienced by a book being pushed across a table is 60N. If the frictional force on the book is 15N, what is the applied force?

75N

400

What are microwelds? What do they cause?

Microwelds are the connections made between the microscopic bumps on two surfaces as they slide past each other. They cause friction.

500

A car drives north 40m up the street then turns right and heads to the east, driving for 30m. What is the car's displacement?

50m

500

It takes you 3600 seconds to walk 2km. What is your velocity (in m/s)?

0.56 m/s

500

If an object has an acceleration of 5m/s2, how long will it take it to accelerate from 10m/s to 30m/s?

4s

500

What the four forces acting on an airplane that is flying in the air?

Thrust, lift, gravity, drag

500

Define and explain terminal velocity.

When an object is falling, gravity is pulling it down and air resistance is pushing back up. Gravity is a constant force, but air resistance increases the faster an object falls. When the air resistance has increased so much that it now balances out the gravitational force (net force=0), the object will then move at a constant velocity, its terminal velocity.

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