What kinetic energy should be imparted to an object of mass “m” to raise it to a height of 1000 meters? (Take g = 10 m/s2) a) 10m J b) 100m J c) 1000m J d) 10000m J
Q: Q15: A car is traveling at 20 Km/h. Another car. With half the mass, is traveling at 40 Km/h Which…
A:
Q: You push a crate down a ramp at a constant speed. Which of the following decreases: a) the potential…
A: You push a crate down a ramp at a constant speed then the potential energy decreases with constant…
Q: A cheetah can accelerate from rest to 6.4 m/s (about 11 m/h) in 1.0 seconds. How much average power…
A:
Q: 3. The energy needed to increase the speed of a certain car from 22 m/s to 54 m/s is 2900 kJ. a)…
A:
Q: a) If the driver suddenly applies the brakes and brings the car to a stop in 3.0 s, what is the work…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: Captain America applies a force of 100 N [fwd] to his shield to move it across a 10 m surface. The…
A:
Q: A 30-kg sledder goes down a 6.0 m high snowy slope from rest, hitting 7.0 m/s as she reaches the…
A: Change in kinetic energy is the difference of final and initial kinetic energy. Kinetic energy is…
Q: A ball of mass 5 kg is attached to a spring that is compressed an amount 0.05m with spring constant…
A:
Q: An object that has gravitational potential energy must be which of the following? (A) moving B…
A: Option (c) is correct. Explanation - Since we know that P = mgh So, an object that has…
Q: QUESTION 12 A 2kg object was dropped from a height of 2 m. Its potential energy at 0.5 m from the…
A: U=mgh
Q: If you throw a ball with mass m upward to height h, the gravity does work? Choose the answer a)…
A: suppose we throw a ball upward to a height h then gravitational force will act on it in the vertical…
Q: A 0.2 kg ball is rest on edge of the top of a 1 m height table. Does the ball have kinetic energy?…
A: From the question it is given that: Mass of ball: m = 0.2 kg Height of table: 1m
Q: A car (m=1000 kg) is initially moving at a speed of 20 m/s (~45 mph) when the driver hits the brakes…
A: Work done is equal to change in kinetic energy W=∆EK=12mvf2-vi2=121000 kg0-20 ms2=-200000 J=-200 kJ
Q: two bodies a and b between them is a compressed spring when the spring is released it pushes both…
A: Here, From the conservation of momentum,
Q: body of mass 40 Kg covers a distance of 50 m in 5s starting from rest under the influence of a…
A: Given: mass of body = 40 Kg distance =50 m time = 5s starting from rest under the influence of a…
Q: 8) A baseball of mass m arrives at a batter with speed v. The batter swings, and hits the ball. The…
A: The workdone by the bat is nothing but the change in the kinetic energy of the ball. So, all we have…
Q: 1) A 1622 kg car has a speed of 11.3 m/s when it hits a tree. The tree doesn’t move and the car…
A:
Q: Question 8 A2 kg object is released from rest from a height of 3 m above Earth's surface. How much…
A:
What kinetic energy should be imparted to an object of mass “m” to raise it to a height of 1000 meters? (Take g = 10 m/s2)
a) 10m J
b) 100m J
c) 1000m J
d) 10000m J
Step by step
Solved in 2 steps
- Conservation of Energy Calculate K, U, E for: = 500kg A = 100⁰m B = 50~ m m 700 c=0m D=50m E = 75m V=0₂V= 10 m/s 50 A 12 75- B Por K = kinetic energy U = potential energy E = total mechanical energy oA weight lifter raises a 170 kg barbell from the ground to a height of 1.5 m. What is the barbell's potential energy (in J)? (Calculate the potential energy relative to the ground.) 1 DETAILSAn object of mass 5kg is taken from a height of 10 m to a height of 30 m. What is the increment in its potential energy? (Assume g = 10m/s2) a) 500 J b) 1000 J c) 1500 J d) 2000 J
- 7) A 1,000[kg] rock is moved from the north end of a parking lot to the south end. The parking lot is horizontal and the length of the parking lot is 10[m]. How much work needs to be done to the rock? XA) B) C) O[J] 10[J] 100[J] D) 1,000[J] 10,000[J] F) More information needs to be givenIf an object of mass 2.00 kg is dropped from rest into free fall from some height where it has +5.00 Joules of gravitational potential energy, then what kinetic energy will it have when its height is zero? a. 5.00 J b. 4.00 J c. 10.0 J d. 2.00 J e. zero JQ:3 a) Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s. b) If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy? c) A box has a mass of 5.8 kg. The box is lifted from the garage floor and placed on a shelf. If the box gains 145 J of Potential Energy, how high is the shelf?
- The energy needed to increase the speed of a certain car from 22 m/s to 54 m/s is 2900 kJ. A) What is the mass of the car? B) At what speed is the cars kinetic energy equal to 1500 kJ? C) The car is driven up pikes Peak, an elevation gain of 5500 feet from the base. What is the change of potential energy of the car? give the answer in Joules. 7. Car 1 has half the mass of car 2, but they both have the same kinetic energy. If the speed of car 1 is v = 10.0 m/s, what is the speed of car 2?A car with a mass of 1,500 kg is going straight ahead at a speed of 60 m/s. The brakes can supply a force of 9,500 N. Calculate: a) The kinetic energy of the car b) The distance it takes to stop the car.
- 1. How much work was done by gravity in lifting a 2-kg object 5m above the horizontal? 2.How much work was done by a person in pushing an object if she applied 50N (at 40˚ from horizontal) to move it 350 cm? 3.How much work was done by a person in pushing an object if she applied 20N (at 30˚ from vertical) to move it 5m?Energy (1).pdf 2 / 3 T Problem 9: A 3 kg block is pushed 3 m up a 30° incline by a 50 N force aligned parallel to the ramp. The coefficient of kinetic friction between the ramp and the block is 0.2. a) Calculate the work done by gravity. b) Calculate the work done by the applied force. c) Calculate the work done by the normal force. d) Calculate the work done by the friction force. e) Calculate the net work done on the block. f) Find the speed of the block after traveling this distance. Assume it started at rest. 110% Pr TI re W sp ha A: ar ax Pr A pe of re4.) Worker 1 lifts a mass M1=30kg straight up a distance of 4 meters in 9 seconds. Worker 2 lifts a mass M2 = 15kg straight up a distance of 3 meters is 2 seconds. Determine: a.) Which worker did more work? b.) Which worker developed more power?