A 1000 kg race car starts from rest and reaches a speed of 100 km/h in...
- A 1000 kg race car starts from rest and reaches a speed of 100 km/h in 20 s. What is the power delivered by the car’s engine? (2 points).
- A 1 kg mass is released from the top of a smooth slide of height 2m. At the bottom of the slide the mass slides on a horizontal surface and stops at a distance of 5 m. What is the coefficient of kinetic friction of the horizontal surface? (3.5 points).
- The force constant of a spring is 10 N/m. A 100 g mass is in contact with the spring and the other end is attached to wall. The mass is compressed by 2 cm and released. What is the speed of the object? (2 points).
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A 1000 kg race car starts from rest and reaches a speed of 100
km/h in...
A 2.00 kg block is pushed against a spring with negligible mass and force constant k = 400 N/m compressing it 0.220 m.
A 2.00 kg block is pushed against a spring with negligible mass and force constant k = 400 N/m compressing it 0.220 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless incline with slope 37.0 degree. What is the speed of the block as it slides along the horizontal surface after having left the spring? How far does the block travel up the incline before stops and starts to slide back...
1 45 kg is released from rest from the top of a rough ramp, with Mass...
1
45 kg is released from rest from the top of a rough ramp, with Mass - coefficient of kinetic friction 0.25 between the block and the incline, of height 3.2 m and length d 5.5 m. At the bottom of the ramp, the mass slides on a horizontal, frictionless surface until it compresses a spring of spring constant k 2. 110 N/m. a. Calculate the speed of the mass at the bottom of the ramp? b. How far does...
f 57 kg starts from rest e at a height of 45 m. h shown in...
f 57 kg starts from rest e at a height of 45 m. h shown in Figure 9. d peak. (4.5) A 58. A ball is attached to a vertical spring with a spring constant of 6.0 N/m. It is held at the equilibrium position of the spring and then released. It falls 0.40 m and then bounces back up again. Calculate the mass of the ball. (4.7) 59. A ball of mass 0.50 kg is attached to a horizontal...
A leggs of mass 12g slides along a frictionaless surface with an initial speed of 2.6...
A leggs of mass 12g slides along a frictionaless surface with an initial speed of 2.6 m/s . If the leggs slides up a ramp and comes to rest, at what height does the leggs come to rest? If the leggo slides into an uncompressed spring (k=6.2 kg/s^2) on a smooth horizontal surface, wnat is the maximum compression of the pring by the leggo? If the leggo sldes into an uncopressed spring (6.2 kg/s^2) on a smooth horizontal surface, what...
8. A 30.0-kg block slides down a frictionless incline. If the block starts from rest and...
8. A 30.0-kg block slides down a frictionless incline. If the block starts from rest and has a speed of 3.00-m/s at the bottom, at what vertical distance did the block start its descent Answer: 0.459 m 9. It is found that a force of 18-N is required to stretch a spring by 0.300 meters from its natural length. (a) What is the spring constant of the spring? (b) How much energy is stored in the spring when it is...
A block of mass m = 3.00 kg starts from the rest and slides down a...
A block of mass m = 3.00 kg starts from the rest and slides down a 30.0∘ incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 6.40 kg which is at rest on a horizontal surface (Figure 1). (Assume a smooth transition at the bottom of the incline.) The collision is elastic, and friction can be ignored. (A) Determine the speed of the block with mass m = 3.00 kg after the...
21. A frictionless roller coaster car is released from rest on the track at a height...
21. A frictionless roller coaster car is released from rest on the track at a height of 50 m. How fast is the car going at the top of a circular loop with a radius- 12 m? (a) 19.8 m/s (b) 20.8 m/s (c) 21.7 m/s (d) 22.6 m/s (e) 23.6 m/s 7 22. A bullet (mass-0.0050 kg) is fired into a suspended block of wood (m-5.0 kg). Initially the wood is not moving. The bullet lodges in the wood....
BY Problem - 11P29 A block of mass m is held at rest on a horizontal...
BY Problem - 11P29 A block of mass m is held at rest on a horizontal surface with which it has coefficient of kinetic friction pk. The block is in contact with a spring of force constant k which is compressed by Ax, as shown at right. The block is released and allowed to slide to the left. (a) What is the speed v of the block at the moment when the spring is no longer com- pressed? (b) The...
As shown in the figure below, a 2.25-kg block is released from rest on a ramp of height h.
As shown in the figure below, a 2.25-kg block is released from rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.0 cm that has a coefficient of kinetic friction μk = 0.520. Find h such that the block's speed after crossing the rough patch is 4.20 m/s. An object with a...
Question 5 In the figure, a block of mass m = 3.50 kg slides from rest...
Question 5 In the figure, a block of mass m = 3.50 kg slides from rest a distance d down a frictionless incline at angle 9 = 27.0° where it runs into a spring of spring constant 470 N/m. When the block momentarily stops, it has compressed the spring by 20.0 cm. What are (a) distance d and (b) the distance between the point of the first block-spring contact and the point where the block's speed is greatest? A (a)...
1
45 kg is released from rest from the top of a rough ramp, with Mass - coefficient of kinetic friction 0.25 between the block and the incline, of height 3.2 m and length d 5.5 m. At the bottom of the ramp, the mass slides on a horizontal, frictionless surface until it compresses a spring of spring constant k 2. 110 N/m. a. Calculate the speed of the mass at the bottom of the ramp? b. How far does...
f 57 kg starts from rest e at a height of 45 m. h shown in Figure 9. d peak. (4.5) A 58. A ball is attached to a vertical spring with a spring constant of 6.0 N/m. It is held at the equilibrium position of the spring and then released. It falls 0.40 m and then bounces back up again. Calculate the mass of the ball. (4.7) 59. A ball of mass 0.50 kg is attached to a horizontal...
8. A 30.0-kg block slides down a frictionless incline. If the block starts from rest and has a speed of 3.00-m/s at the bottom, at what vertical distance did the block start its descent Answer: 0.459 m 9. It is found that a force of 18-N is required to stretch a spring by 0.300 meters from its natural length. (a) What is the spring constant of the spring? (b) How much energy is stored in the spring when it is...
21. A frictionless roller coaster car is released from rest on the track at a height of 50 m. How fast is the car going at the top of a circular loop with a radius- 12 m? (a) 19.8 m/s (b) 20.8 m/s (c) 21.7 m/s (d) 22.6 m/s (e) 23.6 m/s 7 22. A bullet (mass-0.0050 kg) is fired into a suspended block of wood (m-5.0 kg). Initially the wood is not moving. The bullet lodges in the wood....
BY Problem - 11P29 A block of mass m is held at rest on a horizontal surface with which it has coefficient of kinetic friction pk. The block is in contact with a spring of force constant k which is compressed by Ax, as shown at right. The block is released and allowed to slide to the left. (a) What is the speed v of the block at the moment when the spring is no longer com- pressed? (b) The...
Question 5 In the figure, a block of mass m = 3.50 kg slides from rest a distance d down a frictionless incline at angle 9 = 27.0° where it runs into a spring of spring constant 470 N/m. When the block momentarily stops, it has compressed the spring by 20.0 cm. What are (a) distance d and (b) the distance between the point of the first block-spring contact and the point where the block's speed is greatest? A (a)...
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