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Special Relativity — Quiz Answers

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Alyssa is carrying a water balloon while running down a field at a speed of 14 meters per second She tosses the water balloon forward toward a bucket with a speed of 23 meters per second Alyssa’s friend Naya is standing still next to the field. Which statement is supported by this scenario?

A
The speed of the balloon is 23 meters per second for Alyssa and 37 meters per second for Naya.
B
The speed of the balloon is 23 meters per second for Alyssa and 14 meters per second for Naya.
C
The speed of the balloon is 37 meters per second for Alyssa and 23 meters per second for Naya.
D
The speed of the balloon is 14 meters per second for Alyssa and 23 meters per second for Naya.
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Frank stands still while throwing a dart toward a target with a speed of 25 meters per second What is the speed of the dart observed by Frank compared to the speed observed by a stationary observer?

A
The speed is less than 25 meters per second for both people.
B
The speed is 25 meters per second for both people.
C
The speed is greater than 25 meters per second for Frank only.
D
The speed is greater than 25 meters per second for the observer only.
4

According to Einstein, nothing in the universe can move faster than which approximate speed?

A
1 point 0 times 10 to the 7th power m/s
B
1 point 0 times 10 to the 8th power m/s
C
3 point 0 times 10 to the 9th power m/s
D
3 point 0 times 10 to the 8th power m/s
5

Suppose a rocket is traveling through space and moving at a speed close to the speed of light. Three minutes pass on the rocket. For an observer on Earth, how many minutes passed on Earth?

A
three minutes because time is absolute
B
less than three minutes because of time dilation
C
less than or greater than three minutes depending on the speed
D
more than three minutes because of time dilation
6

Jin is standing still and watching an archer on a horse traveling away from a target. The archer is moving at a speed of 4 meters per second and shoots the arrow toward the target with a speed of 17 meters per second Which statement is supported by this scenario?

A
For Jin, the speed of the arrow is 13 meters per second , and for the archer, the speed of the arrow is 17 meters per second .
B
For both Jin and the archer, the speed of the arrow is 21 meters per second .
C
For both Jin and the archer, the speed of the arrow is 17 meters per second .
D
For Jin, the speed of the arrow is 21 meters per second , and for the archer, the speed of the arrow is 4 meters per second .
7

Alex is standing still and throws a football with a speed of 10 meters per second to his friend, who is also standing still. The two friends are standing 5 meters apart. Which describes how each person observes the speed of the football?

A
Both Alex and his friend observe it as less than 10 meters per second .
B
Alex observes it as 10 meters per second , and his friend observes it as less than 10 meters per second .
C
Alex observes it as less than 10 meters per second , and his friend observes it as 10 meters per second .
D
Both Alex and his friend observe it as 10 meters per second .
10

Basim’s robotics team builds a robot that travels at 9 meters per second and can fire a tennis ball at a target. Which would result in a judge who is sitting beside the testing ground observing the tennis ball having a speed of 7 meters per second ?

A
The robot fires the ball forward with a speed of 7 meters per second .
B
The robot fires the ball backward with a speed of 2 meters per second .
C
The robot fires the ball backward with a speed of 7 meters per second .
D
The robot fires the ball forward with a speed of 2 meters per second .

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Special Relativity — Quiz Answers — Physics