Al is moving by you at a very high speed (close to the speed of light). You get out a clock and measure 10 seconds going by. If you also watch a clock in Al's ship, how much time will you see it record during your 10 seconds?
A) You will see Al's clock record less than 10 seconds.
B) You will see Al's clock record more than 10 seconds.
C) You will see Al's clock agree that 10 seconds go by.
A) You will see Al's clock record less than 10 seconds.
You might also like to view...
An ice skater doing a spin pulls in her arms, decreasing her moment of inertia by a factor of two. How does her angular speed changes?
A) It is reduced by a factor of two. B) It is reduced by a factor of four. C) It increases by a factor of two. D) It increases by a factor of four. E) It doesn't change.
Velocity: What must be your average speed in order to travel 350 km in 5.15 h?
A. 66.0 km/h B. 67.0 km/h C. 68.0 km/h D. 69.0 km/h
A boy kicks a football with an initial velocity of 20 m/s at an angle of 25° above the horizontal. The magnitude of the acceleration of the ball while it is in flight is
A) 25 m/s2. B) 20 m/s2. C) 9.8 m/s2. D) 8.4 m/s2. E) 0 m/s2.
A 10-kg mass and a 6.0-kg mass are connected by a light string over a massless, frictionless pulley. If g = 9.8 m/s2, what is the acceleration of the system when released?
a. 2.5 m/s2 c. 7.8 m/s2 b. 6.5 m/s2 d. 9.8 m/s2