Abaseball player hits a foul ball vertically off his bat. the ball goes straight up and then falls back down. just before it hits the ground, the catcher catches the ball. the height of the ball t seconds after it is struck can be described by the function s(t)=-16t^2+80 t + 1 here, the height of the ball above the ground, s, is measured in feet. find the function, v(t), that describes the velocity of the ball at time t. v(t) = click here to preview your answer. find the function, a(t), that describes the acceleration of the ball at time t. a(t) = click here to preview your answer.

2.22/3.33 points | previous answers tamucolphysmechl1 4.pre.002. ask your teacher my notes question part points submissions used on a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 2.40 m/s. (a) what are the magnitude and direction of the velocity of the red glider after the collision? magnitude 3.33 m/s correct: your answer is correct. direction correct: your answer is correct. (b) is this collision elastic?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.