A football is kicked with a velocity of 31 m/s at an angle of 41º. What is the ball's acceleration in the vertical direction as it flies through the air? A. -9.8 m/s^2
B. 23.4 m/s^2
C. O m/s^2
D. -20.3 m/s^2

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?