The S.I. unit of acceleration is meters per second2 Select one: a.True b.false

One of the main speed tests in athletics is the 400 meters dash. At the 1999 Seville World Championship, athlete Michael Johnson won that event, with 43.18 seconds. This time, second, written in scientific notation is:   a. 0.4318 x 102   b. 4.318 x 101   c. 431.8 x 10-1   d. 43.18 x 100   e. 4,318 x 10-2

I need help on this question?

QUESTION 2 Match units with physical quantities. m = meter kg = kilo gram s= second Mass (M) v Volume (V) A. kg m-3 v Velocity Distance B. m3 Time C.m v Length D.ms1 Mass Density E. kg Volume >

6. X and Y are quantities that have different dimensions. Select all physically meaningful operations. X A. B. XY C. X+Y D. X-Y E. x² + y² X F. ey G. eX+Y H. X² or Y² I. 1 1 X3 or Y3

15. A car travels at a constant velocity of 30 m/s. How long does it take to travel 126 meters? A car starts from rest and accelerates for 10 seconds at 3.5 m/s2. How far does it travel?

For a short time, the speed v of a car, in m / s, is given by v = at2 + bt3, where t is the time in seconds. The units of a and b are, respectively,   a) m/s^2; m/s^3 b) m/s^4; m/s^5 c) s^3/m; s^4/m d) m.s^2; m.s^4 e) m/s^3; m/s^4

hat number w.ww The word "units" refers to the corresponding quantity of something. For example, 2 is a number; 2 seconds is a physical quantity that has the units of second. In physics problems, are usually not looking for a number; we are looking for a need to also know the units. If you do not include units with the answer, you will not receive physical quantity, which means we full credit. Physicists are very nitpicky about this! 8. You may have learned the formula distance speed x time. How long would it take in seconds to travel a distance of 2000 meters if you are traveling at a speed of 25 meters per second? (note: your answer must include the word "seconds" or the abbreviation "s" after your number...remember your units! \Sxt t1475 2000 25tt 2000 -25t 1975-t 9. How long would it take in minutes to travel a distance of 2000 meters if you are traveling at a speed of 50 meters per second? S X t e1950 2o00 Sot 2000-50-t 1950 10. How far does sound travel in 1 minute? Put your…

a. 0.400 m/s2b. 0.555 m/s2c. 0.308 m/s2d. 0.385 m/s2

How long will it take a boat, moving at 5.6 m/s, to travel 100 meters? a.17.9 seconds.              c. 0.056 seconds. b. 100 seconds.              d. 560 seconds.