A vertical Position vs horizontal position plot Label the known quantities in th
ID: 1533193 • Letter: A
Question
A vertical Position vs horizontal position plot Label the known quantities in the plot. How long does it take reach the ground? How far does the shingle move horizontally? Alice and Tom five from an overhang into the lake below. Tom simply drops straight down from ledge, but Alice Neither person reach the lake takes a running start and jumps with an initial horizontal velocity of 25 m/s. Neither person experience any significant air resistance Compare the time it takes each of them to below. Alice reached the surface of the lake first. Tots reached the surface of the lake first. Alice and Tom will reach the surface of the lake at the same time. Alice and Toms will reach the surface of the lake at the same time. We cannot determine who will reach the lake first, there is not enough information.Explanation / Answer
1.
The time taken to reach the ground is t =Sqrt(2h/g)
Where h is height and g is the acceleration due to gravity
The shingle moves horizontally to a distance is range
R =Horizontal velocity(u)*Time taken to reach the ground(t)
2.
Answer :A
Alice reached the surface of the lake first
In the horizontal direction,the velocity of tom is with zero intial velocity and there is no acceleration
Where as alice moves with a velocity of 25m/s
From the equations we get
final velocity of tom is v =Sqrt(2gh)
Where as the for alice the final velocity is v =Sqrt(2gh+u2) =Sqrt(2gh+625)