Friday

August 22, 2014

August 22, 2014

Posted by **Deanna** on Sunday, December 5, 2010 at 6:01pm.

1.A 62.0-kg person, running horizontally with a velocity of +3.54 m/s, jumps onto a 13.4-kg sled that is initially at rest.

(a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away.(b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?

2.A golf ball strikes a hard, smooth floor at an angle of θ = 29.4° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.055 kg, and its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impulse applied to the golf ball by the floor? (Hint: Note that only the vertical component of the ball's momentum changes during impact with the floor.)

**Related Questions**

algebra - Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution ...

math - Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution ...

math - Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution ...

Math - I'm having problems solving for an equation with a single variant. ...

Math Rates/proportions - I have two questions that are based on the following ...

physics - two point charges are 10.0 cm apart and have chargeso of 2.0 uC (micro...

physics - A small ball rolls horizontally off the edge of a tabletop that is 1.2...

algebra - I don't understand how to do these problems, anyone that can help id ...

Physics 111 - While running, a person dissipates about 0.60 J of mechanical ...

Physics - While running, a person dissipates about 0.6 J of mechanical energy ...