Homework Help: physics

Posted by Jacky on Monday, February 27, 2012 at 12:48am.

A cart starts from position 4 (which is 20m above ground) in the figure below with a velocity of 11 m/s to the left. Find the speed with which the cart reaches positions 1, 2, and 3. Neglect friction.
speed at position 1 m/s?
speed at position 2 m/s?
speed at position 3 m/s?

position 3 is 10m
position 2 is 15m
position 1 is 0m or ground level

Honestly i don't even know how to begin?

physics - Henry, Tuesday, February 28, 2012 at 6:26pm
V3^2 = Vo^2 + 2g*d.
V3^2 = (11)^2 + 19.6*(20-10) = 317.
V3 = 17.80 m/s=Velocity at position 3.

V2^2 = (11)^2 + 19.6*(20-15) = 219.
V2 = 14.8 m/s.

V1^2 = ^11)^2 + 19.6*(20-0) = 513.
V1 = 22.6 m/s.
physics - Jacky, Tuesday, February 28, 2012 at 7:15pm
Thank you so much! :)

Answer this Question

Related Questions

physics - A cart starts from position one with a velocity of 17.0 m/s. Find the ...
physics - A cart connected to a spring oscillates according to the following ...
Physics - Ball is thrown horizontally off a cliff with an initial speed of 20m/s...
Physics - If the cart weighs 3.9kg and the cart starts at a height of 7.8m, what...
physics - Two fan carts with different fan speeds and different accelerations ...
physics - Two fan carts with different fan speeds and different accelerations ...
physics - wo fan carts with different fan speeds and different accelerations are...
physics - A shopper pushes a grocery cart 20m at constant speed on level ground ...
physics - two children ride bicycle towards each other with instant velocity of ...
physics - wo fan carts with different fan speeds and different accelerations are...

For Further Reading

First Name:
School Subject:
Answer: