Posted by Cheryl | Posted in Accessories | Posted on 19-01-2009
Tags: bag, bags, cart, golf, golf travel bag hard case, golf travel bag reviews, golf travel bags, golf travel bags caravan, golf travel bags express wheeled travel covers, golf travel bags for sale, golf travel bags hard, golf travel bags ratings, golf travel bags the vault, golf travel bags with wheels, travel
A car drives straight off the edge of a cliff that is 48 m high. The police at the scene of the accident obser?
1)A car drives straight off the edge of a cliff that is 48 m high. The police at the scene of the accident observed that the point of impact is 138 m from the base of the cliff. How fast was the car traveling when it went over the cliff?
2)A hot-air balloon is rising straight up with a speed of 4 m/s. A ballast bag is released from rest relative to the balloon when it is 13.8 m above the ground. How much time elapses before the ballast bag hits the ground?
3) The altitude of a hang glider is increasing at a rate of 6.25 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5 m/s when the sun is directly overhead. Find the magnitude of the glider’s velocity.
4)A golf ball rolls off a horizontal cliff with an initial speed of 13.9 m/s. The ball falls a vertical distance of 13.5 m into a lake below.
(a) How much time does the ball spend in the air?
(b) What is the speed v of the ball just before it strikes the water?
First, how long does it take to fall 48 m
t = √(2d/g)
t = √(2(48)/(9.8)) = 3.13 sec
now how far could the car move forward in that time
v = d/t or
v = 138/3.13 = 44.1 m/s
only one answer per customer.
.
