3. A 2.0kg object with an initial speed of 12m/s moves on a horizontal frictionless surface...
a 2.0 kg mass moves along a frictionless horizontal surface at a speed of 5.0 m/s. The mass encounters a 30 degree inclined surface with a constant friction force of 1.5 N. At 1 m high (vertical) the surface levels off and is again frictionless. the mass then encounters a spring with k=10 N/m a) how far is the spring compressed after the mass comes to rest? b) how far down the inclined plane will the mass move after bouncing...
1 (15 pts) A block of mass m 2.10 kg slides with an initial speed v 4.65 m/s on a frictionless, horizontal surface. The block now encounters a rough patch with a coefficient of kinetic fric- tion given by k-0.275. The rough patch extends for a distance d 1.20 m, after which the sur- face is again frictionless. (a) What is the acceleration of the block when it is in the rough patch? (b) What is the final speed vf...
On an essentially frictionless, horizontal ice rink, a skater moving at 6.0 m/s encounters a rough patch that reduces her speed by 46 % due to a friction force that is 26 % of her weight. Use the work-energy theorem to find the length of this rough patch.
"On an essentially frictionless, horizontal ice rink, a skater moving at 4.3 m/s encounters a rough patch that reduces her speed by 42% due to a friction force that is 24% of her weight. Use the work—energy theorem to find the length of this rough patch."
On an essentially frictionless horizontal ice-skating rink, a skater moving at 2.8 m/s encounters a rough patch that reduces her speed by 47 % to a friction force that is 22 % of her weight. Use the work-energy principle to find the length of the rough patch.
12. A 62 kg skier is moving at 6.5 m/s on frictionless horizontal snow-covered plateau when she encounters a rough patch 3.50 m long. The coefficient of kinetic friction between this patch and her skis is 0.30. After crossing the rough patch and returning to friction free snow, she skis down an icy frictionless hell 2.5 m high. A) How much work is done by friction in crossing the patch? B) How fast is the skier moving when she gets...
Use the work–energy theorem to solve each of these problems. You can use Newton’s laws to check your answers. A)A skier moving at 4.25 m/s encounters a long, rough, horizontal patch of snow having a coefficient of kinetic friction of 0.220 with her skis. How far does she travel on this patch before stopping? B)Suppose the rough patch in part A was only 2.89 m long. How fast would the skier be moving when she reached the end of the...
A 62.0 kg skier is moving at 6.50 m/s on a frictionless, horizontal snow covered plateau when she encounters a rough patch 3.50 m long. The coefficient of kinetic friction between this patch and returning to friction-free snow, she skis down an icy, frictionless hill 2.50 m high. (a) How fast is the skier moving when she gets to the bottom of the hill? (b) How much internal energy was generated in crossing the rough patch?
Use the work–energy theorem to solve each of these problems. You can use Newton’s laws to check your answers. A) A skier moving at 5.57 m/s encounters a long, rough, horizontal patch of snow having a coefficient of kinetic friction of 0.220 with her skis. How far does she travel on this patch before stopping? Express your answer with the appropriate units. B) Suppose the rough patch in part A was only 2.99 m long. How fast would the skier...
A 3.00 kg object is at rest on a flat, horizontal, frictionless surface. it is struck by a 3.00 g paintball traveling at 80.0 m/s to the left and the paint adheres to the side of the object. After the collision, the object slides a distance of 1.00 m on the horizontal surface and then up a surface made of the same material inclined at 20.0 degrees above the horizontal. a) what is the speed of the object after the...