An unwary football player collides with a padded goalpost while running at a velocity of 5.70 m/s and comes to a full stop after compressing the padding and his body 0.270 m. what is his deceleration?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction