# Posts by royaa

Total # Posts: 4

**physics**

A sports car is advertised to be able to stop in a distance of 60 m from a speed of 105 km/h. (a) What is its acceleration in m/s2? Incorrect: Your answer is incorrect. m/s2 (b) How many g's is this (g = 9.80 m/s2)? Correct: Your answer is correct.

*October 18, 2012*

**Physics**

A horse canters away from its trainer in a straight line, moving 130 m away in 13.0 s. It then turns abruptly and gallops halfway back in 5.4 s. a) Calculate its average speed. (b) Calculate its average velocity for the entire trip, using "away from the trainer" as ...

*October 5, 2012*

**physics**

Vector V1 is 8.58 units long and points along the -x axis. Vector V2 is 4.45 units long and points at +40.0° to the +x axis. (a) What are the x and y components of each vector? V1x = Incorrect: Your answer is incorrect. V1y = Incorrect: Your answer is incorrect. V2x = ...

*September 25, 2012*

**physics**

Vector V1 is 8.58 units long and points along the -x axis. Vector V2 is 4.45 units long and points at +40.0° to the +x axis. (a) What are the x and y components of each vector? V1x = V1y = V2x = V2y = (b) Determine the sum V1 + V2. Magnitude Direction ° (...

*September 25, 2012*

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