Agirl throws a stone from a bridge. consider the following ways she might throw the stone. the speed of the stone as it leaves her hand is the same in each case, and air resistance is negligible. case a: thrown straight up. case b: thrown straight down. case c: thrown out at an angle of 45 above horizontal. case d: thrown straight out horizontally. in which case will the speed of the stone be greatest when it hits the water below?

The speed of the stone hitting the water below will be the same for every case.

Acceleration is rate of change of velocity.

a = acceleration ( m/s² )

v = final velocity ( m/s )

u = initial velocity ( m/s )

t = time taken ( s )

d = distance ( m )

Let us now tackle the problem!

Given:

height of the stone = h

initial speed of the stone = u

Unknown:

final speed of the stone = v = ?

Solution:

From information above , we could conclude that the speed of the stone hitting the water below will be the same for every case.

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Projectile , Motion , Horizontal , Vertical , Release , Point , Ball , Wall

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min