Homework Help: physics

Posted by Frankie on Monday, October 4, 2010 at 2:20pm.

EXPLAIN
A rubber ball (mass 0.30 kg) is dropped from a height of 1.2 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s.
(a) What is the magnitude and direction of the impulse imparted by the floor to the ball?

so to find v1=square root of 2gh
V1*m +V2*m=2.5

WHERE did the square root of 2gh come from?

physics - bobpursley, Monday, October 4, 2010 at 5:37pm
Remember the equation
Vf^2=Vi^2+2gh ? If Vi is zero, then...Vf=

Where did it come from..Conservation of energy.
The final KE at impact= the intial PE
1/2 mv^2=mgh

Answer this Question

Related Questions

physics - A rubber ball (mass 0.21 kg) is dropped from a height of 1.7 m onto ...
Physics - A rubber ball of mass 41.5 g is dropped from a height of 1.75 m onto a...
physics - A rubber ball of mass 19.5 g is dropped from a height of 1.85 m onto a...
physics - A rubber ball of mass 18.0 g is dropped from a height of 1.75 m onto a...
Physics - A rubber ball (mass 0.30 kg) is dropped from a height of 2.0 m onto ...
physics - a superball of mass .125 kg is dropped onto a concrete floor from a ...
physics 111 - A ball of mass 0.120 kg is dropped from rest from a height of 1.25...
physics - A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. ...
physics - A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. ...
physics - A steel ball is dropped onto a hard floor from a height of 2.15 m and ...

For Further Reading

First Name:
School Subject:
Answer: