Physics, 28.09.2019 23:30 Kaitneedshelps
Atennis ball with a speed of 25.9 m/s is moving perpendicular to a wall. after striking the wall,
the ball rebounds in the opposite direction with a speed of 21.3157 m/s. if the ball is in contact
with the wall for 0.0133 s, what is the average acceleration of the ball while it is in contact with
the wall? take "toward the wall” to be the positive direction. answer in units of m/s 2
Answers: 2
Physics, 22.06.2019 00:00
An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?
Answers: 1
Physics, 22.06.2019 05:10
A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm
Answers: 2
Physics, 22.06.2019 07:00
World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s
Answers: 2
Physics, 22.06.2019 08:50
You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?
Answers: 1
Atennis ball with a speed of 25.9 m/s is moving perpendicular to a wall. after striking the wall,
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