In the figure here, a small block is sent through point A with a speed of 6.9 m/s. Its path is without friction until it reaches the section of length L = 13 m, where the coefficient of kinetic friction is 0.76. The indicated heights are h1= 6.0 m and h2 = 2.4 m. What are the speeds of the block at (a) point B and (b) point C? (c) Does the block reach point D? (d) If so, what is its speed there; if not, how far through the section of friction does it travel? %3D D (a) Number Unit (b) Number Unit (c) (d) Number Unit B.

In the figure here, a small block is sent through point A with a speed of 6.0 m/s. Its path is without friction until it reaches the section of length L = 13 m, where the coefficient of kinetic friction is 0.79. The indicated heights are h1 = 5.3 m and h2 = 2.2 m. What are the speeds of the block at (a) point B and (b) point C? (c) Does the block reach point D? (d) If so, what is its speed there; if not, how far through the section of friction does it travel? В (a) Number i Unit (b) Number i Unit (c) (d) Number i Unit > >

A 32.0-kg  crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. For the first 11.0 mm the floor is frictionless, and for the next 10.0 mm the coefficient of friction is 0.20. What is the final speed of the crate after being pulled these 21.0 mm? Express your answer to three significant figures and include the appropriate units.

A block of mass m = 0.26 kg slides with initial velocity vo m/s along a frictionless surface (as in the figure). The block next slides through a region of length d= 0.19 m with kinetic friction. After passing through the friction region, the block slides up a curved ramp until momentarily coming to rest at a height h above the level surface. If the kinetic friction coefficient μk = 0.126 and the block reaches height h = 0.11 m above the initial level, what was its initial velocity vo? Express the answer in m/s but enter only the numerical part in the box. m h

Problem 10: The speed of a block traveling on a horizontal frictional surface changes from v; =16 m/s to v= 11 m/s in a distance of d = 8.5 m.

A hockey puck is at the top of a 10 m long slippery slope, that makes an angle of 30° to the horizontal and leads down to a flat hockey rink. The hockey puck is struck with a hockey stick giving it a speed of 5 m/s. What is the speed of the hockey when it reaches the bottom of the slope? Assume friction is negligible.

We want to slide a 10.0-kg crate up a 3.0-m-long ramp inclined at 30.0° A worker, ignoring friction, calculates that he can do this by giving it an initial speed of 6.0 m/s at the bottom and letting it go. But friction is not negligible; the crate slides only 2.2 m up the ramp, stops, and slides back down see the Figure. Assume friction is constant, how fast va is the crate moving when it reaches back the bottom of the ramp? Consider g= 10.0 m/s?. des p f 1 to pi 2. en hd d Point 2 woored S a) 2.65 m/s, b) 2.00 m/s. c) 2.83 m s. d) None of the above. y-6.0m/s The c yeud 00 LIm Poat 1 (1O O c O a O d O b

In Figure below, a small block is sent through point A with a speed of 7.0 m/s. Its path is without friction until it reaches the section of length L=15 m, where the coefficient of kinetic friction is μ =0.7. The indicated heights are  h1= 6 m and h2=2 m. How far through the section of friction does it travel?

Imagine a country side region with several smooth hills.  A  mass m  slides over these hills on a day when they are covered with ice. Ignore friction. The top of the first hill is 7.0 m high from the ground level and the speed of the block at the top of the hill is 15m/s. Next hill is at 3.0 m from the zero level,  what is the speed of the block when it is at the top of this hill?

The figure to the right shows a pool slide of length 5.50 m. The end point of the slide is at 30.0 cm above the water level on the pool. During a summer vacation, an initially at rest 34.5 kg child slides from the top and splashes into the pool water at a speed of 8.00 m/s. While sliding, the child encounters a constant friction of 45.0 N. (a) What is the speed of the child at the end of the slide? (b) At what height above the water level should the pool slide start? 30.0 cm .5.50 m.