Atennis ball strikes a wall. Which are the following are true about the ball-wall interaction? Select all that apply. The force of the ball on the wall is equal and opposite to the force of the wall on the ball.
The impulse of the ball on the wall is equal and opposite to the impulse of the wall on the ball.
The time of contact for both the ball and the wall are the same.
The collision can be classified as an explosion

The duration of a photographic flash is related to an rc time constantly

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

A). redi wish i´ve