Kinematics Review

Distance and Displacement

100

In one sentence, describe displacement in your own words. 

The distance between an object's final position from it's initial position. 

200

A runner runs 12 laps around a 600 m track, starting and finishing at the starting line. What is the total distance ran?

7,200 m

300

A runner runs 4 laps around a 800 m track, starting and finishing at the starting line. What is the runner's displacement? 

0 meters. 

400

A sailboat travels 300m west and 400m north. What is the sailboat's total distance traveled? 

700m

500

A sailboat travels 300m east and 400 meters north. What is the sailboat's DISPLACEMENT? 

500m

Speed

100

What is the formula for speed? 

s=d/t

200

Manipulate the speed formula (s=d/t) to obtain time.

t=d/s

300

A racecar travels at 100m/s for 5 minutes. What is the objects total distance traveled in METERS? 

30,000m

400

An bowling ball travels down the 18m long alley in 2500 ms. What is the speed of the bowling ball in m/s?

7.2 m/s

500

Find the speed of a race car that travels 45,253 m in 14 minutes in m/s.

53.87 m/s

Velocity

100

What is the formula for average velocity?

v = (x_f - x_i)/Δt

Displacement divided by change in time

200

What is the difference between speed and velocity? 

Velocity is a vector while speed is a scalar

Also acceptable: Velocity has a magnitude and direction while speed just has a magnitude. 

300

What is the average velocity of a car that travels 200m north of the origin in 25 seconds?

8 m/s North

400

What is the FINAL VELOCITY (also called instantaneous velocity) of a car that has an initial velocity of 55m/s and slows down with an acceleration of -9.5 m/s² for 2.5 seconds? 

31.25 m/s

500

What is the average velocity of a car that travels 2000m north of the origin, then turns around and travels 1000m back towards the origin? The total time for the trip was 1 minute. MUST INCLUDE DIRECTION

16.67 m/s North

Displacement was 1000m! so divide the displacement by the time (60 sec) and you get the answer. 

Acceleration

100

Describe acceleration in 1 complete sentence.

Acceptable answers: 

1. Acceleration is the rate of change in velocity. 

2. Acceleration is how fast an object is speeding up or slowing down. 

200

What is the formula for average acceleration? 

a = (v_f - v_i)/Δt

300

What are the 3 ways an object can accelerate? 

1. Speed up

2. Slow Down

3. Turn

400

What is the average acceleration of a car that starts from rest and speeds up to 70 m/s in 4.6 seconds? 

15.22 m/s²

500

What is the average acceleration of a rocket ship that has an initial velocity of 50 m/s and accelerates to 11,200 m/s in 5 minutes? 

37.17 m/s²

Random!

100

What physicist is famous for developing the formula E=mc^2?

Albert Einstein

200

What instrument does Mr. G know how to play?

Tuba/Sousaphone

300

Which famous physicist invented calculus?

Isaac Newton

400

Name one of the first humans to walk on the moon (there are 2). 

Buzz Aldrin or Neil Armstrong

500

Which physicist was famous for his thought experiment regarding wether or not his cat was dead or alive?

Erwin Schrodinger