Dropping objects
Throwing things up
Symbolic Sports
Historical figures
Potpourri
100

Mass X is dropped from a building of height H. Mass Y is thrown up from the street so that it just barely reaches the height of the building before falling back down. How do the times compare

A. Mass X takes longer to fall than Y does to rise

B. Mass X takes the same amount of time to fall as Y does to rise

C. Mass X takes less time to fall than Y does to rise

D. It depends on the masses of X and Y

B. Mass X takes the same amount of time to all as Y does to rise

100
You throw a ball up and let it fall back down to you. How does the times of flight of the upwards and downwards trips compare?
A. The time to rise is the same as the time to fall
B. The time to rise is less than the time to fall
C. The time to rise is greater than the time to fall
D. It depends on the initial velocity
A. The time to rise is the same as the time to fall
100
How long will it take a pop fly with initial speed u to reach maximum height in terms of u, g, and fundamental constants?
u/g
100
Hitler was thrown downwards with speed u from the top of a building of height H. Stalin was thrown upwards with speed u from the top of a building of height H, then falls down to the street. How do the speed upon impact compare?
A. Hitler hits with more speed
B. Stalin hits with more speed
C. It depends on the height of the building
D. They hit with the same speed
D. They hit with the same speed
100
A rock is thrown upwards and falls back to Earth. How does the acceleration compare for the upwards and downwards trips?
A. +9.8m/s2 on the way up, -9.8m/s2 on the way down
B. -9.8m/s2 on the way up, -9.8m/s2 on the way down
C. +9.8m/s2 on the way up, +9.8m/s2 on the way down
D. -9.8m/s2 on the way up, +9.8m/s2 on the way down
B. -9.8m/s2 on the way up, -9.8m/s2 on the way down
200
You throw a ball up and let it fall back down to you. How does the times of flight of the upwards and downwards trips compare?
A. The time to rise is the same as the time to fall
B. The time to rise is less than the time to fall
C. The time to rise is greater than the time to fall
D. It depends on the initial velocity
A. The time to rise is the same as the time to fall
200
You throw a ball up and let it fall back down to you. How does the speed when you catch it compare to the speed you threw it?
A. The speeds are the same
B. The speed thrown is greater than the speed when caught
C. The speed thrown is less than the speed when caught
D. It depends on the initial velocity
A. The speeds are the same
200
A punt is botched badly and goes straight upwards. The ball spends a total time T in the air. What was the initial velocity in terms of T, g, and fundamental constants?
Tg/2
200
Einstein has a mass M and Andre the Giant has a mass 5M. What is the ratio of Andre's speed compared to Einstein's speed when upon impact?
A. 5
B. √ 5
C. 1/5 as fast
D. 1
D. 1
200
Car X is travelling a speed u and runs into a foam barrier that causes it to decelerate with acceleration c. Car Y is traveling a speed 3u and runs into a foam barrier that causes it to decelerate with acceleration 3c. How does the distance to stop compare?
A. Car X goes the same distance as Car Y
B. Car X goes 3 times farther than Car Y
C. Car x goes 9 times farther than Car Y
D. Car X goes 1/3 as far as car Y
D. Car X goes 1/3 as far as car Y
300
Mass X is dropped from a building of height H. Mass Y is dropped from a building of height 2H. How does the speed of mass Y compare to Mass X upon impact?
A. Y is going twice as fast
B. Y is going √2 times as fast
C. Y is going 4 times as fast
D. They will be going the same speed since the acceleration is the same
B. Y is going √2 times as fast
300
Mass X is thrown up with a speed v. Mass Y is thrown upwards with a speed 4v. How much higher does mass Y rise compared to mass X?
A. They rise to the same height
B. Mass Y goes 2 times higher
C. Mass Y goes 4 times higher
D. Mass Y goes 16 times higher
D. Mass Y goes 16 times higher
300
A volleyball spike is hit straight down with speed u. If the net is a distance D above the ground, what speed will the ball have right before it hits the ground in terms of u, g, D, and fundamental constants?
√(u2+2gD)
300
Napoleon and Picasso jump into a pool. Napoleon was going a speed u when hitting the water and stops a distance D below the water surface. Picasso was going a speed 2u when hitting the water and stops a distance 4D below the water surface. How do the accelerations in the water compare?
A. Napoleon experience twice the acceleration
B. Picasso experience three times the acceleration
C. Picasso experiences twice the acceleration
D. They experience the same acceleration
D. They experience the same acceleration
300
Ball X is dropped from a height H. Ball Y is dropped from a height 8H. How do the speeds upon impact compare?
A. Y hits with twice the speed
B. Y hits with 2 √2 the speed
C. They hit with the same speed
D. Y hits with 4√2 times the speed
B. Y hits with 2 √2 the speed
400
Mass A is allowed to fall for a time t. Mass B is allowed to fall for a time 3t. How much farther does mass B fall compared to mass A?
A. they fall the same distance
B. B falls 3 times farther than A
C. B falls 6 times farther than A
D. B falls 9 times farther than A
D. B falls 9 times farther than A
400
Mass X is thrown up with speed v on Earth where the magnitude of the acceleration is g. Mass Y is thrown up with speed v on the Moon where the magnitude of the acceleration is g/6. How much higher does mass Y go compared to mass X?
A. They go the same height
B. Mass Y goes 6 times higher than mass X
C. Mass Y goes √ 6 times higher than mass X
D. Mass Y goes 3 times higher than mass X
B. Mass Y goes 6 times higher than mass X
400
Race car A has a top speed u and acceleration c Race car B has a top speed 2u and acceleration c/6. Starting from rest, how does the time to reach top speed compare for the cars?
A. Car A reaches top speed 3 times faster
B. Car B reaches top speed 3 times faster
C. Car A reaches top speed 12 times faster
D. Car A reaches top speed 6 times faster
C. Car A reaches top speed 12 times faster
400
Herbert Hoover has a mass M and jumps upwards with a speed u. William Howard Taft has a mass 5M and jumps upwards with a speed u/6. How many times higher does Hoover go than Taft?
A. 6 times
B. 36 times
C. 5 times
D. 30 times
B. 36 times
400
A planet has 1/3 the gravity of Earth. How many times higher can you jump there?
3 times higher
500
If you were to drop a mass from four times the height, how much longer would it take to fall?
2 times as long
500
Mass X is thrown up with speed v on Earth where the magnitude of the acceleration is g. Mass Y is thrown up with speed v/2 on planet Zebes where the magnitude of the acceleration is g/8. How much higher does mass X go compared to mass Y?
A. They go the same height
B. Mass X goes 16 times higher than mass Y
C. Mass X goes √ 16 times higher than mass Y
D. Mass X goes 1/2 as high as mass Y
D. Mass X goes 2 times higher than mass Y
500
Soccer ball 1 is kicked upwards with initial speed u Soccer ball 2 is kicked upwards with initial speed 3u In terms of u, g, and fundamental constants, what is the difference in time spent in the air?
A. 2u/g
B. 2g/u
C. 4u/g
D. 6u/g
C. 4u/g
500
Ben Franklin of mass M is launched from a rocket with acceleration c and fires its rockets for a time T. Thomas Jefferson of mass 2M is launched on a rocket with acceleration 3c and fires rockets for a time T/4. How does the maximum speed of Ben compare to the maximum speed of Tom?
A. Ben is going 4/3 the speed of Tom
B. Ben is going 3/4 the speed of Tom
C. Ben is going 2/4 the speed of Tom
D. Ben is going 5/3 the speed of Tom
B. Ben is going 4/3 the speed of Tom
500
Car X has acceleration c and accelerates from rest for a time T. Car Y has acceleration c/2 and accelerates from rest for a time 10T. How do the distances traveled compare?
A. Car Y travels 50 times as far
B. Car Y travels 5 times as far
C. Car Y travels 20 times as far
D. Car Y travels 10 √2 times as far
A. Car Y travels 50 times as far
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