The acceleration of a certain body is 15 m / s2, this means that :?
1) travels a distance of 15 m in 1 s.
2) it has a constant speed of 15 m / s.
3) for every second of movement it travels 15 m away.
4) its speed changes by 15 m / s for each second of movement.
5) travels a distance of 15 m for every second squared of movement.

Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc