P 5-8

Question 5 12.5 pts An object is thrown vertically upwards at an initial velocity 20 m/s. What is the velocity of the object at a time t = 2.55 s after it is launched?Question 6 12.5 pts A ball is thrown vertically upwards. The ball spends a time of 4.56 5 in the all. before landing at the saml: point from where it was thrown' With what initial speed was the ball thrown? Question 7 12.5 pts An arrow is shot vertically downwards, and strikes the ground at a speed of 23 m/s, 10.3 m below from where it was shot. With what initial velocity was the arrow shot?Question 8 12.5 pts A bucket is thrown vertically clown a well with a velocity of 478 mfg. The bucket then takes 1.76 s to reach the bottom of the WEll. What is the depth of the well?I