22. Tarzan is running at top speed 28.8 kph and grabs a vine hanging vertically from a tall tree in the jungle. How high can he swing upward? a. 3.262 m b. 3.162 m c. 3.362 m d. 3.062 m a b C d.
Q: A 75 kg runner has a speed of 5.45 m/s. What is the runner's kinetic energy?
A: Mass of the person is m=75 kg Speed of the person is v=5.45 m/s Note: 1 N=1 kg·m/s2 1 J=1 Nm 1…
Q: 4. A spring has a spring constant, k = 10000 N/m. How much potential energy is stored in the spring…
A: Given data, Spring constant k=10000 N/m Change in length x=1 cm=0.01 m
Q: A 300 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.0 N/cm…
A:
Q: Q10: A block having a mass of 1.0 kg is given an initial velocity VA-1.6 m/s to the right and…
A:
Q: A child and sled with a combined mass of 52.5 kg slide down a frictionless hill that is 7.08 m high…
A:
Q: Old-fashioned pendulum clocks are powered by masses that need to be wound back to the top of the…
A: The three masses of one particular clock are; The height at which mass drops is,
Q: 3. The principle of work and energy. A particle of mass m moves along a curve under the action of a…
A: Solution: A particle of mass m moves along the curve under the action of force vector F. Let us take…
Q: A bungee jumper jumps off a bridge and bounces up and down several times. She finally comes to rest…
A: The energy stored in the spring is U = 0.5 K y2 where, K is the spring constant and y is the…
Q: 3. A slingshot rubber band with a spring constant of 850 N/m was stretched 0.33 m. A 0.4 kg rock was…
A:
Q: Timmy is on the high dive (h=10m) at a local pool. Assuming Timmys mass is 65kg. a. What is his…
A:
Q: 4. A 4.0 kg object has a velocity of 3i m/s at one instant. Eight seconds later, its velocity is (8i…
A: Mass of the object m=4 kg, initial velocity of the object u→=3i^ m/s and final velocity of the…
Q: 1. A cart of mass 2.4 kg rolls without friction on the track shown. At point A the cart is moving at…
A: a) by mechanical energy conservation Kf + Uf = Ki + Ui (1/2)mvb2 + mg(1.7) = (1/2)m×72 + mg(0.3)…
Q: You drop a ball of weight 5.00 N from rest from a certain height above the floor into free fall.…
A: The potential energy is a type of energy which depends upon the relative position of the body. The…
Q: The thrust generated by one jet engine creates a force of F = 51000 N. It takes the jet (with a mass…
A: The magnitude of the thrust is The mass of the jet is .The take-off distance is
Q: A roller coaster, which has the world's largest drop at 418 ft. A fully occupied car has a mass of…
A:
Q: 43. A 200 g mass stretches a spring 40 cm. How much Potential energy does the spring have? A. .392 J…
A:
Q: A rope swing is hung from a tree right at the edge of a small creek. The rope is 5.0 m long; the…
A:
Q: A horizontal carousel is rotating around its axis with constant angular velocity w. On the carousel…
A: As the angular speed of the cart is omega and its constant, Its speed will increase when it moves…
Q: A frictionless plane inclined at 21° above the floor has length 3.3 m. A block starts from rest at…
A: Given data: Initial velocity (u) = 0 m/s Angle of incline (θ) = 21° Length of inclined plane (L) =…
Q: At the Earth's surface, a projectile is launched straight up at a speed of 7.7 km/s. To what height…
A: Given, Speed = 7.7 km/s We need to calculate, Height =?
Q: A block of mass 2.0 kg is moving to the right and changes its speed from 3.0 m/s to 1.0 m/s. Match…
A: Given data: Mass (m) = 2.0 kg Initial velocity (Vi) = 3.0 m/s Final velocity (Vf) = 1.0 m/s…
Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…
A: The frictionless track is described by y=x2d, x<0y=-x2d,…
Q: 5. What is the kinetic energy of a box of mass 0.75 [kg] sliding on a frictionless surface at a…
A: mass of box (m) = 0.75 kg constant speed (v) = 3 ms
Q: An object moving at 21.0 m/s has 1390 J of kinetic energy. What is the object's mass? A. 6.30 kg B.…
A: Given Object speed = v = 21.0 m/s Kinetic energy = K.E = 1390 J We have to calculate object's mass
Q: The spring in a dart gun has a spring constant of 20.0 N/m. The spring is compressed 8.00 x 10-2 m…
A: Given data: Spring constant (k) = 20.0 N/m Compression in spring (x) = 8.00 × 10-2 m Mass of dart…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- QUESTION 7 From the diagram below, what is the speed of the block when it reaches point A at the lowest point on the surface? 2.00-kg block with an initial velocity of 5.00 m/s down the track Frictionless track В 9.00 m 5.00 m A a. 11.2 m/s b. 9.70 m/s C. 14.2 m/s d. 15.7 m/s е. 12.7 m/s3. A 60 kg snowboarder begins to slide down the hill 50 m high on a smooth surface with a radius curvature of 80 m. The next section (AB) is a 20 m flat rough track with u = .3, at the end of which there is an elastic barrier with k = 1000 N/m. Find her speed at point A. b. How much work is done by frictional force? c. What is the maximum compression of the spring? d. Find the rate of heat dissipation along the section AB. e. How long does it take to cover the section AB? а. h k ВA freight elevator weighs 6200 N. What is the power required to raise the elevator a. What a distance of 20 meters in 10 seconds? b. One of the motors for the freight elevator system goes out. Now the maximum power available to move the 6200 N freight elevator is 10 kW. How long does it take to raise the elevator 20 meters now?
- Pls help ASAP on both pls i beg036. A 1.50 kg model train initially traveling at 0.50 m/s acceler- ates to 1.00 m/s in 10. s. a. What is the change in the train's kinetic energy? b. How much power was expended to accelerate the train?5. A 60 kg circus performer is swinging from a trapeze bar.A: She is 10 m off the ground with a speed v1. The spring-board platform below her is atits equilibrium length.B: She lets go of the trapeze bar and lands on th spring-board platform, which compresseswhen she lands on it. When she is stationary, she is 2 m off the ground and the springis maximally compressed.C: The spring-board extends and launches her back into the air. As soon as the spring istotally relaxed again, the performer is 3 m off the ground and has a speed v2.D: The performer lands on a platform 10 m above the floor, and she stands stationary. a. Her initial speed v1 = 10 m/s. What is her total energy at point A? b. Between points A and B, assume none of her energy is lost to heat or friction. Whenshe is stationary on the compressed platform at B, how much energy is stored in thespring-board platform? c. When the spring-board platform is fully released at point C, what must her speed v2 be?
- A block 4-kg mass m located 7.0 m above the ground slid down on smooth inclind surface (35°) a. What is the speed of block when it reaches the bottom? b. How far does the block move on the incline smooth surface (15°) 4 kg Begin h d End 35° 1502. An object has 560 J of potential energy and 890 J of mechanical energy. How much kinetic energy does the object have?. ME = REHPE 560 560 330J= PE olog ertev 3. A slingshot rubber band with a spring constant of 850 N/m was stretched 0.33 m. A 0.4 kg rock was fired from the slingshot after it was released. a. Find the spring potential energy. PE =)2 kx? Z(850X.33) b. What is the kinetic energy of the stone once it was released? PEERE c. What is the velocity of the stone as soon as the slingshot was released?1. Sam, whose mass is 75 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 200 N and a coefficient of kinetic friction on snow of 0.10. Unfortunately, the skis run out of fuel after only 10 s. A. What is Sam’s top speed? B. How far has Sam traveled when he finally coasts to a stop?
- Gina's moped has an output of 6.0 horsepower (1 horsepower = 745.7 W), and its mass is 190 kg. 50 kg, how long does it take for her to reach a speed of 8.0 m/s if she starts her moped from rest? A. 0.92 s B. 1.3 s C. 2.2 s D. 1.7 s Gina's mass is9. If an object is released from the position A on the top of the hill. What will be its speed at the peak C. Assume the track is frictionless. AA h,- 50 m = 30 m B39. mmh A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 31.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down.